Hans Bill - Honorary Professor

Content

Formerly Full Professor
at Department of Physical Chemistry
University of Geneva - Sciences II
30, quai Ernest-Ansermet
CH-1211 Geneva 4

tel. +41(0)22 3796547 (secretary's office)
fax +41(0)22 3796103
e-mail hans.bill@unige.ch

Summary

Work on phosphors: synthesis, spectroscopy, UV generation. The class of materials we developed in the last years performs well as illumination phosphors.

Here are some spectra demonstrating the interest of these materials: the commercial phosphor (black curves) really needs a hard UV excitation and has a low efficiency when excited at 365nm; whereas our materials (green and blue curves) only need soft UV excitation for a good efficiency in the whole visible range, thereby emitting white light.

Luminescence : a brighter future with new phosphors

Luminescence : a brighter future with new phosphors

Bibliography

2015

HAGEMANN, Hans-Rudolf et al. Europium-Doped Ba₇F₁₂Cl₂, a Single Component Near-UV Excited Tunable White Phosphor. In: Journal of Physical Chemistry. C, 2015, vol. 119, n° 1, p. 141-147.
PAL, Prodipta et al. Temperature and host dependence of the transition interference between f–f and f–d transitions of Sm²⁺ in matlockites. In: Journal of Luminescence, 2015, vol. 161, p. 323-329.

2009

HAGEMANN, Hans-Rudolf et al. Physical chemistry at the University of Geneva. In: Chimia, 2009, vol. 63, p. 807-815.

2007

GARCIA-LASTRA, J. M. et al. Anomalous superhyperfine tensor observed in BaFCl doped with the 5d1 ion La2+: Role of 5d-4f hybridization. In: Physical Review. B, Condensed Matter, 2007, vol. 75, n° 15, p. 155118.

2005

REY, J.M. et al. Inter- and intra-configurational transitions of europium (II) in Ba2Mg3F10. In: Journal of Physics. Condensed Matter, 2005, vol. 17, n° 12, p. 1861-1868.
REY, Julien M. et al. Ordering of the heavy anions in mixed BaFBr0.5I0.5 crystals: Experimental results. In: Physical Review. B, Condensed Matter, 2005, vol. 72, n° 18, p. 184107.

2004

FALIN, M. L., BILL, Hans, LOVY, Dominique. EPR of Sm3+ in BaFCl single crystals. In: Journal of Physics. Condensed Matter, 2004, vol. 16, n° 8, p. 1293-1298.
FRÜHMANN, B. et al. Synthesis and Structure of the new Fluoride Bromide Ba6.668(2)Ca0.332(2)F12Br2 and Solid Solutions with Composition Ba7-xCaxF12(ClyBr1-y)2 with x=~0.5, 0 low-spin relaxation in [Fe(Ptz)6](BF4)2 spin transition crystal. In: Zeitschrift für anorganische und allgemeine Chemie, 2004, vol. 630, n° 10, p. 1484-1488.
HAGEMANN, Hans-Rudolf et al. [5]D0 → [7]F0 transitions of Sm[2+] in SrMgF[4]:Sm[2+]. In: Journal of Alloys and Compounds, 2004, vol. 374, n° 1-2, p. 194-196.

2003

FALIN, M. L. et al. EPR and optical spectroscopy of Yb3+ ions in CaF2 and SrF2. In: Journal of Luminescence, 2003, vol. 102-103, n° 1, p. 239-242.
MATSARSKI, Marie et al. Light-induced valence-state switching in BaFCl:La and SrFCl:La. In: Physical Review. B, Condensed Matter, 2003, vol. 68, n° 20, p. 205113.

2002

REY, J.M., BILL, Hans. Photostimulated luminescence of Ba12F19Cl5 : Eu. In: Journal of Luminescence, 2002, vol. 97, n° 3-4, p. 224-228.

2001

FALIN, M.L. et al. EPR and optical spectroscopy of SrF2 doped with Yb3+. In: Journal of Alloys and Compounds, 2001, vol. 323-324, n° 5, p. 692-695.
BERTHEVILLE, B., BILL, Hans. The temperature dependence of the Raman T2g lattice mode in K2S crystals. In: Solid State Ionics, 2001, vol. 139, n° 1-2, p. 159-162.

2000

FALIN, M.L. et al. EPR, ENDOR, and optical spectroscopy of the tetragonal Yb3+ center in KMgF3. In: Physical Review. B, Condensed Matter, 2000, vol. 61, n° 4, p. 9441-9448.
BOUTINAUD, Ph. et al. Optical analysis of X-ray effects in Ag+-doped Strontium fluoride crystals. In: Journal of Physics and Chemistry of Solids, 2000, vol. 61, n° 10, p. 1663-1676.
RODRIGUES-HERZOG, R. et al. Optical microscopy of single ions and morphological inhomogeneities in Sm-doped CaF2 thin films. In: Physical Review. B, Condensed Matter, 2000, vol. 62, n° 16, p. 11163-11169.
MIKHAIL, Patric et al. SrB4O7 : Sm2+: crystal chemistry, Czochralski growth and optical hole burning. In: Journal of Materials Chemistry, 2000, vol. 10, n° 4, p. 987-991.
KUBEL, Frank, HAGEMANN, Hans-Rudolf, BILL, Hans. Synthesis and structure of the disordered modification of Pb7F12Cl2. In: Journal of Solid State Chemistry, 2000, vol. 149, n° 8, p. 56-59.
KUBEL, Frank, BILL, Hans, HAGEMANN, Hans-Rudolf. Synthesis and structure of the ordered modification of Ba6EuF12Cl2. In: Zeitschrift für anorganische und allgemeine Chemie, 2000, vol. 626, n° 8, p. 1721-1722.

1999

KUBEL, Frank, BERTHEVILLE, Bernard, BILL, Hans. Crystal structure of dilithiumsulfide, Li2S. In: Zeitschrift für Kristallographie - New Crystal Structures, 1999, vol. 214, n° 3, p. 302.
KUBEL, Frank, HAGEMANN, Hans-Rudolf, BILL, Hans. Crystal structures of Eu(II) substituted barium magnesium fluorides: Ba0.78(3)Eu0.22(3)MgF4 and Ba5.20(6)Eu0.80(6)Mg7F26. In: Zeitschrift für Kristallographie, 1999, vol. 214, p. 139-142.
REY, Julien M. et al. EPR and optical investigation of Europium doped Ba12F19Cl5. In: Journal of Physics. Condensed Matter, 1999, vol. 11, n° 4-5, p. 7301-7309.
KUBEL, Frank, BILL, Hans, HAGEMANN, Hans-Rudolf. Low temperature crystal growth and structure of ordered Ba7F12Cl2. In: Zeitschrift für Naturforschung. B, 1999, vol. 54b, p. 515-518.
MIKHAIL, P. et al. Optical Hole Burning on Sm2+ at 5 K in Czochralski Grown Sr2MgSi2O7 : Sm Crystals. In: Physica Status Solidi. B, 1999, vol. 215, n° 2, p. R17-R18.
SCHNIEPER, Marc et al. Room-temperature persistent spectral hole burning in SrFCl:Sm2+ films: Temporal and spatial response. In: Applied Physics Letters, 1999, vol. 75, n° 1, p. 40-42.
HAGEMANN, Hans-Rudolf et al. Study of the solid-liquid equilibrium in mixed alkaline earth fluorohalides. In: Journal of Thermal Analysis and Calorimetry, 1999, vol. 57, n° 1, p. 193-202.
KUBEL, Frank, BILL, Hans, HAGEMANN, Hans-Rudolf. Synthesis and structure of Ba7F12Cl2. In: Zeitschrift für anorganische und allgemeine Chemie, 1999, vol. 625, n° 4, p. 643-649.

1998

FALIN, M.L. et al. Electron nuclear double resonance of the cubic Dy3+ center in KZnF3 single crystal. In: Applied Magnetic Resonance, 1998, vol. 14, n° 4, p. 427-434.
REY, Julien M. et al. EPR and optical investigation of Europium doped Ba2Mg3F10. In: Journal of Alloys and Compounds, 1998, vol. 274, n° 4, p. 164-168.
REY, Julien M. et al. Europium doped BaMgF4, an EPR and optical investigation. In: Journal of Alloys and Compounds, 1998, vol. 268, n° 4, p. 60-65.
BERTHEVILLE, Bernard, BILL, Hans, HAGEMANN, Hans-Rudolf. Experimental Raman scattering investigation of phonon anharmonicity effects in Li2S. In: Journal of Physics. Condensed Matter, 1998, vol. 10, n° 9, p. 2155-2169.
BILL, Hans et al. Optical spectroscopy of the Ag+ ion in NaF: Experimental results and analysis of manifestations of the Jahn-Teller effect. In: Journal of Chemical Physics, 1998, vol. 109, n° 17, p. 7328-7337.
JAANISO, Raivo et al. Thin film materials with Sm(III) far room temperature hole burning: design and photomechanism studies. In: Molecular Crystals and Liquid Crystals, 1998, vol. 314, n° 17, p. 155-160.

1997

HAGEMANN, Hans-Rudolf et al. Conformational studies of 2-butanol using temperature-dependent Raman measurements and MM3 calculations. In: Journal of Molecular Structure, 1997, vol. 410-411, n° 2, p. 357-360.
KUBEL, Frank, HAGEMANN, Hans-Rudolf, BILL, Hans. Crystal structure of sodium barium aluminiumhexafluoride, NaBaAlF6. In: Zeitschrift für Kristallographie - New Crystal Structures, 1997, vol. 212, n° 2, p. 89-90.
LEFÈVRE, Valérie et al. Defect association, Jahn-Teller or off-center effect in CaF2:Copper, BaF2:Silver ? In: Zeitschrift für physikalische Chemie, 1997, vol. 200, n° 10, p. 265-273.
BERTHEVILLE, Bernard et al. Ionic conductivity of Na2S single crystals between 295 and 1350K Experimental setup and first results. In: Journal of Physics and Chemistry of Solids, 1997, vol. 58, n° 10, p. 1569-1577.
KUBEL, Frank, HAGEMANN, Hans-Rudolf, BILL, Hans. Mixed Ba5.24Sr0.76Mg7F26. In: Acta Crystallographica. C, Crystal Structure Communications, 1997, vol. 53, n° 12, p. 1735-1738.
MONNIER, Alain et al. Samarium-doped thin films of the Matlockite structure: Design, luminescence, and hole-burning experiments. In: Journal of Applied Physics, 1997, vol. 82, n° 2, p. 536-547.
KUBEL, Frank, HAGEMANN, Hans-Rudolf, BILL, Hans. Synthesis and Structure of Ba6Mg7F26. In: Zeitschrift für anorganische und allgemeine Chemie, 1997, vol. 623, n° 1-6, p. 573-578.
KUBEL, Frank, HAGEMANN, Hans-Rudolf, BILL, Hans. Synthesis, crystal structures and spectroscopic investigations on samarium-doped mixed Ba1-δSrδMgF4 crystals. In: Materials Research Bulletin, 1997, vol. 32, n° 3, p. 263-269.

1996

CHILLIER, Xavier et al. A mass spectrometry and optical spectroscopy investigation of gas-phase ion formation in electrospray. In: Rapid Communications in Mass Spectrometry, 1996, vol. 10, n° 3, p. 299-304.
HAGEMANN, Hans-Rudolf, KUBEL, Frank, BILL, Hans. Crystal structure of Sr4OCl6. In: European Journal of Solid State and Inorganic Chemistry, 1996, vol. 33, n° 11, p. 1101-1109.
KUBEL, Frank, HAGEMANN, Hans-Rudolf, BILL, Hans. Synthesis and structure of Ba12F19Cl5. In: Zeitschrift für anorganische und allgemeine Chemie, 1996, vol. 622, n° 2, p. 343-347.
KUBEL, Frank, HAGEMANN, Hans-Rudolf, BILL, Hans. Synthesis and structure of mixed Ba12F19ClδBr5-δCrystals. In: Zeitschrift für anorganische und allgemeine Chemie, 1996, vol. 622, n° 8, p. 1374-1380.

1995

BOUTINAUD, Philippe, MONNIER, Alain, BILL, Hans. Ag+ center in alkaline-earth fluorides : new UV solid state lasers. In: Radiation effects and defects in solids, 1995, vol. 136, n° 8, p. 69-72.
KUBEL, Frank, HAGEMANN, Hans-Rudolf, BILL, Hans. Crystallochemical and optical study of mixed alkaline earth-samarium fluorohalides of the lead fluorine chloride type. In: Materials Research Bulletin, 1995, vol. 30, n° 4, p. 405-412.
FALIN, M.L. et al. ENDOR and transferred hyperfine interaction of impurity rare-earth ions with nearest diamagnetic ions in crystals. In: Applied Magnetic Resonance, 1995, vol. 9, n° 8, p. 329-354.
BILL, Hans et al. High-temperature spectral hole burning on Samarium(II) in single crystals of the lead fluorohalide structure family and thin films of calcium fluoride. In: Optical Engineering, 1995, vol. 34, n° 8, p. 2333-2338.
JAANISO, Raivo, BILL, Hans. High-temperature spectral hole burning on Sm-doped single crystal materials of PbFCl family. In: Journal of Luminescence, 1995, vol. 64, n° 1-6, p. 173-179.
BOUTINAUD, Philippe, BILL, Hans. Optical centers related to silver in Ag+ -doped strontium fluoride crystals. In: Journal of Physics and Chemistry of Solids, 1995, vol. 57, n° 1, p. 55-64.
MONNIER, Alain et al. Samarium doped alkaline earth halide thin films as spectrally selective materials for hole burning. In: Radiation effects and defects in solids, 1995, vol. 135, n° 1, p. 253-256.
BOUTINAUD, Philippe et al. Silver impurities in cubic metal fluorides : Jahn-Teller effects in the 4d95s1 and 4d9 multiplets. In: Proc. Estonian Acad. Sci. Phys. Math, 1995, vol. 44, n° 8, p. 199-204.
OLIVEIRA, L. et al. Thermally stimulated depolarization current of monovalent copper ions in calcium fluoride. In: Radiation Effects and Defects in Solids, 1995, vol. 135, n° 15, p. 121-123.

1994

ALTORFER, Felix et al. Fast ionic diffusion in Li2S investigated by quasielastic neutron scattering. In: Journal of Physics. Condensed Matter, 1994, vol. 6, n° 14, p. 9937-9947.
JAANISO, Raivo, HAGEMANN, Hans-Rudolf, BILL, Hans. Inhomogeneous broadening of optical spectra in mixed crystals : basic model and its application to Sm2 in SrFClxBr1-x. In: Journal of Chemical Physics, 1994, vol. 101, n° 12, p. 10323-10337.
BOUTINAUD, Philippe, MONNIER, Alain, BILL, Hans. Luminescence mechanisms of Ag+ cubic centres in strontium fluoride crystals. In: Journal of Physics. Condensed Matter, 1994, vol. 6, n° 42, p. 8931-8947.
MONNIER, Alain, BOUTINAUD, Philippe, BILL, Hans. Silver-doped alkaline earth fluorides: Crystal growth and. In: Journal of Physics and Chemistry of Solids, 1994, vol. 55, n° 7, p. 559-573.
PÉDRINI, Christian et al. Spectroscopic studies of the fd ultraviolet transitions of Pr3+ in alkaline earth fluorides. In: Chemical Physics Letters, 1994, vol. 220, n° 6, p. 433-436.
JEFFORD, Charles William et al. Thermolysis and chemiluminescence of monocyclic 1,2,4-trioxan-5-ones. In: Helvetica Chimica Acta, 1994, vol. 77, n° 7, p. 1851-1860.

1993

GÂCON, Jean-Claude et al. 7F0-->5DJ two-photon-absorption transitions of Sm2+ in SrF2. In: Physical Review. B, Condensed Matter, 1993, vol. 47, n° 1-2, p. 11712-11716.
HAGEMANN, Hans-Rudolf, KUBEL, Frank, BILL, Hans. Crystallochemical study of mixed strontium-barium fluorohalides. In: Materials Research Bulletin, 1993, vol. 28, n° 4, p. 353-362.
PÉDRINI, C., MOINE, B., BILL, Hans. Cu+ luminescent centers in CaF2. In: Kanert, G., Spaeth, J.M. (Ed.). Proceedings of the XIIth International Conference on Defects in Insulating Materials Vol. 1. [s.l.] : World Scientific, 1993. p. 593-595.
MINNER, Edith, LOVY, Dominique, BILL, Hans. Electron paramagnetic resonance and relaxation study of copper (II) and silver (II) in CsCdF3 single crystals. In: Journal of Chemical Physics, 1993, vol. 99, n° 9, p. 6378-6383.
MINNER, Edith. Etude spectroscopique des ions Jahn-Teller cuivre et argent bivalents dans des monocristaux de fluoroperovskites de composition chimique AMF₃. Université de Genève. Thèse, 1993.
JAANISO, Raivo, HAGEMANN, Hans-Rudolf, BILL, Hans. Inhomogeneous broadening and spectral hole burning in SryBa1-yFClxBr1-x. In: Technical Digest Opt. Soc. America, 1993, vol. 227, n° 1, p. 153-157.
JAANISO, Raivo, BILL, Hans. Optical detection of Sm2+ nuclear quadrupole resonances in SrFCl and BaFCl. In: Journal of Physics. Condensed Matter, 1993, vol. 5, n° 32, p. 5921-5928.
MINNER, Edith, BILL, Hans. The Jahn-Teller systems Ag²⁺ and Cu²⁺ in RbCdF₃, an EPR investigation. In: Kanert, O. & Spaeth, J.-M. (Ed.). Proceedings of the XII International Conference on Defects in Insulating Materials. Schloss Nordkirchen (Germany). Singapore : World Scientific, 1993. p. 571-573.
GÂCON, Jean-Claude et al. Two-photon spectroscopy of Sm2+ in SrF2 : polarization dependences of 7F0-5DJ transitions. In: O. Kanert and J.-M. Spaeth (Ed.). Proceedings of the XIIth International Conference on Defects in Insulating Materials, Vol. 2. Schloss Nordkirchen (Germany). [s.l.] : World Scientific, 1993. p. 1306-1308.

1992

ALTORFER, Felix et al. Lithium diffusion in the superionic conductor Li2S. In: Physica B: Condensed Matter, 1992, vol. 180-181, n° 2, p. 795-797.
JAANISO, Raivo et al. Members of the PbFCl-type family : possible candidates for room-temperature photochemical hole burning. In: Chimia, 1992, vol. 46, n° 4, p. 133-137.
PEDRINI, Christian, MOINE, Bernard, BILL, Hans. One-and two-photon spectroscopy of monovalent copper ions in calcium fluoride. In: Journal of Physics. Condensed Matter, 1992, vol. 4, n° 10, p. 1615-1622.

1991

MJWARA, P.M. et al. Brillouin scattering investigation of the high temperature diffuse phase transition in Li2S. In: Journal of Physics. Condensed Matter, 1991, vol. 3, n° 23, p. 4289-4292.
SHALTIEL, David et al. Determination of the angular dependence of Hc2 in high Tc single crystals by a microwave technique. In: Superconductor Science and Technology, 1991, vol. 4, n° 1S, p. 85-87.
JAANISO, Raivo, BILL, Hans. f-f and f-d transition interference in Sm2+:SrFCl. In: Physical Review. B, Condensed Matter, 1991, vol. 44, n° 5, p. 2389-2392.
BÜHRER, W. et al. Lattice dynamics and the diffuse phase transition of lithium sulphide investigated by coherent neutron scattering. In: Journal of Physics. Condensed Matter, 1991, vol. 3, n° 9, p. 1055-1064.
SHALTIEL, David et al. Microwave absorption across Tc: Determination of the angular dependance Hc2(theta). In: Physical Review. B, Condensed Matter, 1991, vol. 43, n° 1S, p. 13594-13597.
LUCKEN, A., HAGEMANN, Hans-Rudolf, BILL, Hans. Raman study of the incommensurate layer crystal (CH3CH2CH2NH3)2MnCl4 (=PAMnC) from 10 to 300 K. In: Journal of Physics. Condensed Matter, 1991, vol. 3, n° 27, p. 5085-5097.
JAANISO, Raivo, BILL, Hans. Room temperature persistent spectral hole burning in Sm-dopedSrFCl1/2Br1/2 mixed crystals. In: Europhysics Letters, 1991, vol. 16, n° 6, p. 569-574.
MONNIER, Alain, GERBER, A., BILL, Hans. The Jahn-Teller system Ag2+ : NaF, an electron paramagnetic resonance and optical absorption study. In: Journal of Chemical Physics, 1991, vol. 94, n° 9, p. 5891-5896.

1990

LOVY, Dominique, PLUSS, J.B., BILL, Hans. A new pulse generator for Pulsed ESR. In: Measurement Science and Technology, 1990, vol. 1, n° 2-3, p. 720-724.
MINNER, Edith, BILL, Hans. EPR and optical investigation of thermally treated NaF: Cu single crystals. In: Chemical Physics Letters, 1990, vol. 175, n° 3, p. 231-236.
SADOWSKI, Wojciech et al. Growth of single crystals, thermal dependency of lattice parameters and Raman scattering in the Nd2-xCexCuO4-δ system. In: Physica C: Superconductivity and Its Applications, 1990, vol. 170, n° 1-2, p. 103-111.
HAGEMANN, Hans-Rudolf et al. Polarized Raman spectra of beryl and bazzite. In: Physics and Chemistry of Minerals, 1990, vol. 17, n° 5, p. 395-401.
HAGEMANN, Hans-Rudolf et al. Raman spectra of single crystal CuO. In: Solid State Communications, 1990, vol. 73, n° 6, p. 447-451.

1989

MONNIER, Alain et al. Electronic structure of Cr3+ in Cs2NaYCl6 and Cs2NaYBr6 lattices. Electron-paramagnetic resonance and electron-nuclear double resonance measurements and multiple scattering X α calculations. In: Journal of Chemical Physics, 1989, vol. 91, n° 11, p. 6650-6656.
SHALTIEL, David et al. Observation of ESR in the Bi high-Tc superconductors. In: Physica C: Superconductivity, 1989, vol. 157, n° 2, p. 240-246.
SHALTIEL, David et al. Single crystal ESR studies on tetragonal YBa2Cu3O6+x. In: Physica C: Superconductivity and Its Applications, 1989, vol. 158, n° 3, p. 424-432.
BILL, Hans, LOVY, Dominique, HAGEMANN, Hans-Rudolf. Study of the T⊗t Jahn-Teller effect: ESR of Ag2+ in the alkaline earth fluorides. In: Solid State Communications, 1989, vol. 70, n° 5, p. 511-516.
HAGEMANN, Hans-Rudolf, BILL, Hans, MAREDA, Jiri. The conformational equilibrium of CH3CH2CH2NH3+: Raman study in solution and ab initio calculations. In: Journal of Molecular Structure, 1989, vol. 196, n° 11, p. 69-78.
BILL, Hans, LOVY, Dominique. The effect of trigonal and tetragonal stresses on the model Jahn-Teller system Y2+:SrCl2. In: Journal of Physics. Condensed Matter, 1989, vol. 1, n° 51, p. 10265-10279.
SHALTIEL, David et al. Unusual behavior of the Gd ESR in single crystals of GdyY1-yBa2Cu3O6+x with x=0.1-0.8 and y=0.03-0.06: evidence for a magnetic interaction in the superconductors. In: Physica C: Superconductivity and Its Applications, 1989, vol. 161, n° 1, p. 13-20.

1988

MOHNHAUPT, K.Martin et al. A vibrational study of some 1,2,4-Trioxanes. In: Helvetica Chimica Acta, 1988, vol. 71, n° 5, p. 992-999.
BILL, Hans, RAVI SEKHAR, Y., LOVY, Dominique. An EPR study of a new low-temperature phase transition in KLiSO4:MoO43-. In: Journal of Physics. C, Solid State Physics, 1988, vol. 21, n° 15, p. 2795-2804.
RIVERA, Jean-Pierre, BILL, Hans, LACROIX, Roger. EPR and Buerger precession study of othorhombic Mg-Cl:Mn2+ boracite. In: Ferroelectrics, 1988, vol. 80, n° 1, p. 31-34.
RAVI SEKHAR, Y., BILL, Hans. EPR evidence of a pressure-induced phase transition in LiKSO4. In: Physical Review. B, Condensed Matter, 1988, vol. 38, n° 16, p. 11802-11804.
MOINE, Bernard et al. Fluorescence and photoionisation processes of divalent Yb ions in SrF2. In: Journal of Luminescence, 1988, vol. 40-41, n° 16, p. 299-300.

1987

RAVI SEKHAR, Y., BILL, Hans. 2S ground state ions in ionic crystals: ESR results. In: Physica Status Solidi. B, 1987, vol. 143K, n° 2, p. 111-114.
RAVI SEKHAR, Y., BILL, Hans, LOVY, Dominique. The identification and structure of FSO2 radical trapped in potassium sulphate crystals. In: Chemical Physics Letters, 1987, vol. 136, n° 1, p. 57-61.
HAGEMANN, Hans-Rudolf, RAVI SEKHAR, Y., BILL, Hans. Vibrational spectra of MnO4- isolated in KBr crystals: an illustration of pure Td symmetry in the solid state. In: Journal of Chemical Education, 1987, vol. 64, n° 5, p. 456-458.

1986

RAVI SEKHAR, Y., BILL, Hans. A paramagnetic Cl-O defect produced by x irradiation of KBr:ClO4. In: Journal of Chemical Physics, 1986, vol. 85, n° 9, p. 4938-4942.
HAGEMANN, Hans-Rudolf et al. A simple, low cost furnace for high temperature Raman measurements. In: Journal of Physics. E, Scientific Instruments, 1986, vol. 19, n° 3, p. 199-200.
BILL, Hans et al. A trigonally charge-compensated Y2+ ion in CaF2: a Jahn-Teller system. In: Journal of Physics. C, Solid State Physics, 1986, vol. L19-L23, n° 1, p. 19-23.

1985

MAGNE, Georges, BILL, Hans, LOVY, Dominique. Cu2+ in NaF: EPR study of a dynamic center. In: Solid State Communications, 1985, vol. 53, n° 8, p. 661-664.
RAVI SEKHAR, Y., BILL, Hans. EPR of MnO42- in KBr under uniaxial stress. A case of intermediate to weak Jahn-Teller effect. In: Molecular Physics, 1985, vol. 54, n° 2, p. 757-760.
RAVI SEKHAR, Y., BILL, Hans. EPR studies on an ``unperturbed'' CrO43- center in K2SO4 crystals. In: Journal of Chemical Physics, 1985, vol. 82, n° 2, p. 657-647.
HAGEMANN, Hans-Rudolf et al. Raman investigation of 1,4-cyclohexadiene in the liquid and solid state. In: Spectrochimica Acta. A, Molecular and Biomolecular Spectroscopy, 1985, vol. 41, n° 5, p. 751.
HAGEMANN, Hans-Rudolf, BILL, Hans. Raman spectroscopic study of structural phase transitions in the layer crystals (EtNH3)2MCl4 with M=Cd and Mn. In: Journal of Physics. C, Solid State Physics, 1985, vol. 18, n° 35, p. 6441-6456.
HAGEMANN, Hans-Rudolf, BILL, Hans, MAREDA, Jiri. Raman study of conformational disorder in n-PrNH3X (X=Cl,Br,I). In: Journal of Molecular Structure, 1985, vol. 127, n° 3-4, p. 241-245.

1984

BILL, Hans et al. Endor study of Gd3+ in Cs2NaYCl6. In: Chemical Physics Letters, 1984, vol. 104, n° 2-3, p. 258-262.
BILL, Hans. Observation of the Jahn-Teller effect with electron paramagnetic resonance. In: Perlin, Yu E., Wagner, M. (Ed.). The dynamical Jahn-Teller effect in localized systems. Amsterdam : [s.n.], 1984.
HAGEMANN, Hans-Rudolf, BILL, Hans. Raman spectroscopic study of EtNH3X (X=Cl,Br) and several deuterated analogs. In: Journal of Chemical Physics, 1984, vol. 80, n° 1, p. 111-118.
BILL, Hans, PILLA, O. Study of the intermediate Jahn-Teller system La2+ in CaF2 by Raman and EPR spectroscopy. In: Journal of Physics. C, Solid State Physics, 1984, vol. 17, n° 18, p. 3263-3267.

1983

BILL, Hans, RAVI SEKHAR, Y. (ReO4)2- ion in KCI: Experimental evidence for a multimode intramolecular Jahn-Teller effect. In: Physical Review. B, Condensed Matter, 1983, vol. 28, n° 5, p. 2352-2355.
BILL, Hans, RAVI SEKHAR, Y. E[circle times operator]ε-type Jahn-Teller effect of ReO42- in KBr crystals: an EPR study. In: Journal of Physics. C, Solid State Physics, 1983, vol. L16, n° 24, p. 889-894.
DEYHIMI, Farzad, BILL, Hans. Multiple-order resonant Raman scattering of the localized molecular rose center in BaF2. In: Chemical Physics, 1983, vol. 81, n° 3, p. 433-437.
IQBAL, Zafar, BILL, Hans, BAUGHMAN, R.H. Vibrational spectra and structure of undoped polyparaphenilene. In: Journal de Physique. Colloque, 1983, vol. 44, n° C3, p. 761-764.

1982

DEYHIMI, Farzad, BILL, Hans. Analogs of the Rose center in the alkaline earth fluorides: Production by hydrolysis and identification by Raman spectroscopy. In: Journal of Solid State Chemistry, 1982, vol. 43, n° 2, p. 181-189.
SIEBENTHAL, Jean-Marc de, BILL, Hans. EPR investigation on an O-3 center in SrCl2. In: Chemical Physics Letters, 1982, vol. 87, n° 1, p. 40-44.
BUCHET, R., BILL, Hans, SIEGFRIED, B. Experimental Raman and IR investigation of Phenobarbital Febarbamate, Diferbarbamate and Tetrabamate. In: Spectrochimica Acta. A, Molecular Spectroscopy, 1982, vol. 38, n° 1, p. 239-245.
HAGEMANN, Hans-Rudolf, BILL, Hans. Low-temperature raman spectra of bis(ethylammonium)tetrachlorocadmate (EACdC) and two isotopic analogs. In: Chemical Physics Letters, 1982, vol. 87, n° 1, p. 45-49.
BILL, Hans. Origin of the coloration of yellow fluorites: The O3- center structure and dynamical aspects. In: Journal of Chemical Physics, 1982, vol. 76, n° 1, p. 219-224.
HAGEMANN, Hans-Rudolf, BILL, Hans. Raman investigation on structural phase transitions in (C2H5NH3)2CdCl4. In: Chemical Physics Letters, 1982, vol. 93, n° 6, p. 582-585.
RAVI SEKHAR, Y., BILL, Hans. The electronic structure of CrO43- as studied by EPR in K2SO4 single crystals. In: Chemical Physics Letters, 1982, vol. 92, n° 4, p. 349-352.
HAGEMANN, Hans-Rudolf, BILL, Hans. Vibrational characterization of the compound (C2H5NH3)2PdCl4(EAPdC). In: Chemical Physics Letters, 1982, vol. 90, n° 4, p. 282-286.

1981

JØRGENSEN, Christian K., BILL, Hans, REISFELD, Renata. Candoluminescence of rare earths. In: Journal of Luminescence, 1981, vol. 24-25, n° 1, p. 91-94.
SIEBENTHAL, Jean-Marc de, BILL, Hans. EPR of N2- centers in strontium chloride. In: Journal of Physics and Chemistry of Solids, 1981, vol. 42, n° 2, p. 89-93.
NGUYEN-XUAN, Tho, TRONCHET, Jean M. J., BILL, Hans. Etude par des techniques de partition d'énergie des facteurs qui conditionnent l'équilibre conformationnel de propènes disubstitués-1,3 de configuration E. In: Helvetica Chimica Acta, 1981, vol. 64, n° 6, p. 1949-1958.
GÂCON, Jean-Claude et al. New measurements of the emission spectra of Sm2+ in KMgF3 and NaMgF3 crystals. In: Journal of Physics and Chemistry of Solids, 1981, vol. 42, n° 7, p. 587-593.
DEYHIMI, Farzad, BILL, Hans. Raman investigation of the structural and vibrational properties of the rose center in alkaline earth fluorides. In: Chemical Physics Letters, 1981, vol. 78, n° 3, p. 603-606.

1980

BILL, Hans et al. g-tensor analysis of S- and Se- centers in cubic crystals. In: Solid State Communications, 1980, vol. 34, n° 5, p. 383-384.
BÜHRER, W., BILL, Hans. Lattice dynamics of Na2S. In: Journal of Physics. C, Solid State Physics, 1980, vol. 13, n° 30, p. 5495-5504.

1979

BALESTRA, Claudio, BILL, Hans, CLIGNEZ, J.-L. A computer-controlled ENDOR spectrometer. In: Journal of Physics. E, Scientific Instruments, 1979, vol. 12, n° 9, p. 824-828.
BILL, Hans. An O2- molecule ion in CaF2: Structure and dynamical features. In: Journal of Chemical Physics, 1979, vol. 70, n° 1, p. 277-283.
SIEBENTHAL, Jean-Marc de, BILL, Hans. Investigation of sulfur molecular paramagnetic centers in SrCl2. In: Physica Status Solidi. B, 1979, vol. 91, n° 2, p. 479-486.
MONTANER, Antoine et al. Optical constants of sodium sulphide. In: Physica Status Solidi. A, Applied Research, 1979, vol. 52, n° 2, p. 597-601.

1978

BILL, Hans, SCHWAN, L., SIEGMUND, E. A Jahn-Teller model of the S- ion in KCl and KBr crystals. In: Comptes Rendus SPHN Genève, 1978, vol. 13, n° 9, p. 23.
SIEBENTHAL, Jean-Marc de, NICOLLIN, Daniel, BILL, Hans. An EPR investigation of Fe3+ in SrCl2. In: Chemical Physics Letters, 1978, vol. 58, n° 2, p. 317-320.
BILL, Hans, CALAS, Georges. Color centers, associated rare-earth ions and the origin of coloration in natural fluorites. In: Physics and Chemistry of Minerals, 1978, vol. 3, n° 2, p. 117-131.
NICOLLIN, Daniel, BILL, Hans. Experimental contribution to the study of S-state ions in ionic single crystals. In: Journal of Physics. C, Solid State Physics, 1978, vol. 11, n° 23, p. 4803-4814.
BILL, Hans. Parametrization of the Measured Temperature Dependence of the Crystal Field Splitting in Axial8s State Ion Centers. In: Physica Status Solidi. B, 1978, vol. 89K, n° 1, p. 49-52.
RIVERA, Jean-Pierre, BILL, Hans, LACROIX, Roger. Reinterpretation of the EPR experiment on Cu2+ with regard to the structure of rhombohedral Zn-Cl boracite. In: Ferroelectrics, 1978, vol. 20, n° 1, p. 225-227.

1977

SIEBENTHAL, Jean-Marc de, BILL, Hans. A perturbed O2- molecule ion in SrCl2 single crystals EPR results. In: Physica Status Solidi. B, 1977, vol. 79, n° 1, p. 259-267.
JURYISKA, R., BILL, Hans. EPR investigation of defects in MoO3 single crystals. In: Il Nuovo Cimento, 1977, vol. 38B, n° 2, p. 369.
SIEBENTHAL, Jean-Marc de, BILL, Hans. EPR of O-2 pairs in SrCl2 crystals. In: Chemical Physics Letters, 1977, vol. 45, n° 2, p. 334-336.
MORET, Jean-Marc, BILL, Hans. Experimental determination of the spin-stress coefficients of Gd3+ in the new host crystal Na2S. In: Physica Status Solidi. A, Applied Research, 1977, vol. 41, n° 1, p. 163-171.
WEBER, Jacques, BILL, Hans. Jahn-Teller distortion and electronic structure of the O- center in CaF2: an MS Xα study. In: Chemical Physics Letters, 1977, vol. 52, n° 3, p. 562-566.
BÜHRER, W., BILL, Hans. Photonendispersion im Na2S Kristall. In: Helvetica Physica Acta, 1977, vol. 50, n° 4, p. 431.

1976

RIVERA, Jean-Pierre, BILL, Hans, LACROIX, Roger. EPR of Mn2+ in the three ferroelectric phase of Zn-Ci boracite. A model for the monoclinic phase with a bigger cell is proposed (II). In: Ferroelectrics, 1976, vol. 13, n° 1, p. 363-364.
RIVERA, Jean-Pierre, BILL, Hans, LACROIX, Roger. EPR of Mn2+ in Zn-boracites (I). In: Ferroelectrics, 1976, vol. 12, n° 2, p. 387.
RIVERA, Jean-Pierre, BILL, Hans, LACROIX, Roger. EPR of powder Mg-OH: Mn2+ boracite suggesting a rhombohedral phase. In: Physica Status Solidi. A, Applied Research, 1976, vol. 35K, n° 2, p. 105-108.
NICOLLIN, Daniel, BILL, Hans. Gd3+, Eu2+ in SrFCl and BaFCl single crystals: EPR results. In: Solid State Communications, 1976, vol. 20, n° 2, p. 135-137.
RIVERA, Jean-Pierre, BILL, Hans, LACROIX, Roger. I. EPR of Mn2+ in the ferroelectric and paraelectric phases of natural (Mg-Cl) boracite. In: Ferroelectrics, 1976, vol. 13, p. 361-362.
BILL, Hans, VON DER OSTEN, W. Raman and Vibronic Spectra of a New Oxygen Molecule Ion in CaF2. In: Physica Status Solidi. B, 1976, vol. 75, n° 2, p. 613-619.

1975

BILL, Hans, MAREDA, Jiri. Endor investigation of a VF center in natural CaF2 crystals. In: Chemical Physics Letters, 1975, vol. 36, n° 2, p. 218-221.
BILL, Hans. Experimental results on the off center O- ion in KI crystals. In: Solid State Communications, 1975, vol. 17, n° 10, p. 1209-1213.

1974

SIEBENTHAL, Jean-Marc de, BILL, Hans. A New O- Center in SrCl2 Crystals. In: Physica Status Solidi. B, 1974, vol. 65K, n° 1, p. 35-37.
BILL, Hans, SILSBEE, Robert H. Dynamical Jahn-Teller and reorientation effects in the EPR spectrum of CaF2:O-. In: Physical Review. B, Condensed Matter, 1974, vol. 10, n° 7, p. 2697-2709.
ZINGG, Walter et al. ESR Observation of the Γ6 Excited State of Er3+ in the Dilute Alloy PdEr. In: Physical Review Letters, 1974, vol. 32, n° 1, p. 1221-1224.
RIVERA, Jean-Pierre et al. Measurement of the magnetoelectric effect in Ni-Cl boracite. In: International Journal of Magnetism, 1974, vol. 6, n° 3-4, p. 211-220.
BILL, Hans. Motional effects in the EPR spectrum of an O2- molecule ion in natural CaF2 crystals. In: Solid State Communications, 1974, vol. 15, n° 5, p. 911-915.
SIEBENTHAL, Jean-Marc de, BILL, Hans, LACROIX, Roger. Paramagnetic resonance results on a tetragonal Eu2+ center in SrFCl crystals. In: Solid State Communications, 1974, vol. 14, n° 2, p. 167-168.
RIVERA, Jean-Pierre et al. Très forte séparation de l'état fondamental 6S5/2 du Mn2+ dans des boracites de Cl, Br et I en phase cubique. In: Solid State Communications, 1974, vol. 14, n° 1, p. 21-24.

1973

BILL, Hans, CHATTERJEE, R., DIXON, J. M. Comments on the relativistic orbit-lattice interaction as a possible mechanism for the ground state splittings of S-state ions. In: Physica Status Solidi. B, 1973, vol. 57K, n° 1, p. 51-53.
BILL, Hans, VON DER OSTEN, W. Experimental results on a new O-2 center in CaF2 crystals. In: Journal de Physique. Colloque, 1973, vol. C9-11, n° 1, p. 519-520.
BILL, Hans. Observation of Cu2+ In SrCl2 crystals. In: Physics Letters. A, 1973, vol. 44, n° 2, p. 101-102.

1972

BILL, Hans. Comment on Jahn-Teller Distortion of Ag2+ Ions in SrF2 and CaF2 by Odd Modes. In: Physical Review. B, Condensed Matter, 1972, vol. 6, n° 11, p. 4359.

1971

BILL, Hans. Jahn-Teller effect of the O- ion in CaF2. In: Solid State Communications, 1971, vol. 9, n° 8, p. 477-480.

1969

BILL, Hans. Endor investigation of Gd3+ in CaF2 crystals. In: Physics Letters. A, 1969, vol. 29, n° 10, p. 593-594.
BILL, Hans. Investigations on colour centres in alcaline earth fluorides. In: Helvetica Physica Acta, 1969, vol. 42, n° 2, p. 771.

1967

BILL, Hans, SIERRO, Jérôme, LACROIX, Roger. Origin of coloration in some fluorites. In: American Mineralogist, 1967, vol. 52, n° 10, p. 1003-1008.
BILL, Hans, LACROIX, Roger. RPE de l'ion moléculaire (OF)2- contenant de l'oxygène 17O. In: Journal de Physique Colloques, 1967, vol. 28, n° C4, p. 138-139.

1966

BILL, Hans, LACROIX, Roger. EPR of a centre in Y3+ doped artificial CaF2 crystals. In: Physics Letters. A, 1966, vol. 22, n° 3, p. 250.
BILL, Hans, LACROIX, Roger. Preliminary results on a centre in CaF2 crystals. In: Physics Letters. A, 1966, vol. 21, n° 3, p. 257.
BILL, Hans, SUTER, H., LACROIX, Roger. The Vk centre in SrCl2 crystals. In: Physics Letters. A, 1966, vol. 22, n° 3, p. 241-242.

1963

BILL, Hans, BIERI, R. Der Resonanznachweis von Ionen im Omegatron. In: Zeitschrift für Angewandte Mathematik und Physik, 1963, vol. 14, n° 2, p. 189-192.

Former Research Groups

Hans Bill - Honorary Professor

Summary

Bibliography