TY - JOUR A1 - Lorenz, Bernd A1 - Spatz, J. P. A1 - Dorhout, P. K. A1 - Casey, R. A1 - D'Adamo, R. A1 - Hochheimer, H. D. T1 - High pressure absorption and Raman study of the quasilinear compound CsCuS6 Y1 - 1996 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Orgzall, Ingo A1 - Dorhout, P. K. A1 - Casey, R. A1 - D'Adamo, R. A1 - Hochheimer, H. D. T1 - High pressure optical and Raman investigations of the ternary compound Cs2MoS4 Y1 - 1996 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Orgzall, Ingo A1 - Dorhout, P. K. A1 - Raymond, C. C. A1 - Hochheimer, H. D. T1 - Pressure induced phonon softening and structural phase transitions in Cs2MoS4 Y1 - 1996 ER - TY - JOUR A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. A1 - Bechthold, Jeff A1 - Hor, P.-H. A1 - Lorenz, Bernd A1 - Spatz, J. P. T1 - High pressure study of the temperature dependence of the conductivity of template synthesized polyaniline and polypyrrole Y1 - 1994 ER - TY - JOUR A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. A1 - Bechthold, Jeff A1 - Hor, P.-H. A1 - Lorenz, Bernd A1 - Spatz, J. P. T1 - High pressure conductivity of template synthesized polypyrrole Y1 - 1994 ER - TY - JOUR A1 - Orgzall, Ingo A1 - Lorenz, Bernd A1 - Mikat, Jürgen E. R. A1 - Dietel, Reinhard A1 - Knochenhauer, Gerald A1 - Schulz, Burkhard T1 - Raman and IR spectroscopic investigation of aromatic 1,3,4-oxadiazole polymers and oligomers N2 - The molecular structure of poly(p-phenylene-1,3,4-oxadiazole) (POD) is investigated using i.r. and Raman spectroscopy. Both methods reveal characteristic differences for the a- and b-POD forms that are most obvious in the spectral region between 1500 and 1650 cm-1. The spectra for dimer and tetramer compounds already show the same features as found for longer chains. Based on molecular modelling calculations these differences are assigned to cis and trans conformations of the main chain segments. High pressure measurements show a linear shift of the Raman lines and support the result of the thermodynamic stability of the trans conformation. Y1 - 1997 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Orgzall, Ingo A1 - Dorhout, P. K. A1 - Raymond, C. C. A1 - Brister, K. A1 - Weishaupt, K. A1 - D'Adamo, R. A1 - Hochheimer, H. D. T1 - High pressure X-ray diffraction, absorption, luminescence and Raman scattering study of Cs2MoS4 Y1 - 1997 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Peun, T. A1 - Orgzall, Ingo T1 - Kinetic and thermodynamic investigation of cBN formation in the system BN-Mg3N2 Y1 - 1997 ER - TY - JOUR A1 - Orgzall, Ingo A1 - Lorenz, Bernd A1 - Mikat, Jürgen E. R. A1 - Reck, Günter A1 - Knochenhauer, Gerald A1 - Schulz, Burkhard T1 - Phase transition in 1,3,4-oxadiazole crystals under high pressure Y1 - 1998 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Spatz, J. P. A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. A1 - Bechthold, Jeff A1 - Hor, P.-H. T1 - High pressure conductivity study of template synthesized polypyrrole : observation of a crossover from three to one dimensional variable range hopping Y1 - 1995 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Hochheimer, H. D. A1 - Tozer, S. W. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. A1 - Hor, P.-H. T1 - High pressure low temperature investigation of template synthesized conducting polymers Y1 - 1995 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Miller, A. J. A1 - Hochheimer, H. D. A1 - Hönle, W. A1 - Li, T. A1 - Ruoff, A. L. T1 - High pressure phase transition in tetramethylammonium tetra bromocuprate Y1 - 1995 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Spatz, J. P. A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. A1 - Bechthold, Jeff A1 - Hor, P.-H. T1 - Dimensional crossover of the temperature dependence of the electrical conductivity of template synthesized polyaniline and polypyrrole Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Tozer, S. W. A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. T1 - Magnetoresistance of conducting polymers Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Spatz, J. P. A1 - Weishaupt, K. A1 - Hochheimer, H. D. A1 - Menon, V. A1 - Parthasarathy, R. A1 - Martin, C. R. A1 - Bechthold, Jeff A1 - Hor, P.-H. T1 - Observation of crossover from three to two dimensional variable range hopping in template synthesized polypyrrole and polyaniline Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Miller, A. J. A1 - Hochheimer, H. D. A1 - Hönle, W. T1 - The observation of a new high pressure phase transition in tetramethyl ammonium tetrabromocuprate Y1 - 1994 ER - TY - JOUR A1 - Orgzall, Ingo A1 - Lorenz, Bernd T1 - Computer simulation of microstructures and geometric properties of a random system of penetrable disks : a model for compacted powders Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Shen, Yuen R. A1 - Holzapfel, W. B. T1 - Characterization of the new luminescence pressure sensor SrFCl:Sm2+ Y1 - 1994 ER - TY - JOUR A1 - Lorenz, Bernd A1 - Orgzall, Ingo T1 - Optical absorption studies of sulfur at pressure up to 20 Gpa Y1 - 1994 ER - TY - JOUR A1 - Orgzall, Ingo A1 - Lorenz, Bernd T1 - Kinetics of photoinduced phase transitions in sulfur below 10 Gpa Y1 - 1994 ER -