Peter Sondergeld

Peter Sondergeld
Postdoc

Contact

Research

Publications

Publications

  1. M. A. Carpenter, S. Rios, P. Sondergeld, W. A. Crichton, and P. Bouvier: Structural Evolution of (Ca0.35Sr0.65)TiO3 Perovskite at High Pressures. Journal of Solid State Chemistry 180 (2007) 360 - 369.
  2. M. A. Carpenter, P. Sondergeld, B. Li, R. C. Liebermann, J. W. Walsh, J. Schreuer, and T. W. Darling: Structural Evolution, Strain, and Elasticity of Perovskites at High Pressures and Temperatures. Journal of Mineralogical and Petrological Sciences 101 (2006) 95 - 109.
  3. P. Sondergeld, B. Li, J. Schreuer, and M. A. Carpenter: Discontinuous Evolution of Single-Crystal Elastic Constants as a Function of Pressure Through the C2/c <-> P2(1)/c Phase Transition in Spodumene (LiAlSi2O6). Journal of Geophysical Research - Solid Earth 111 (2006) Art. No. B07202.
  4. P. Sondergeld, W. Schranz, A. Troester, T. Armbruster, G. Giester, A. V. Kityk, and M. A. Carpenter: Ordering and Elasticity Associated with the Low-Temperature Phase Transitions in Lawsonite. American Mineralogist 90 (2005) 448 - 456.
  5. M. A. Carpenter, H.-W. Meyer, P. Sondergeld, S. Marion, and K. S. Knight: Spontaneous Strain Variations Through the Low Temperature Phase Transitions of Deuterated Lawsonite. American Mineralogist 88(4) (2003) 534 - 546.
  6. W. Schranz, A. Troester, A. V. Kityk, P. Sondergeld, and E. K. H. Salje: Ultralow-Frequency Elastic Response in KMn1-xCaxF3. Europhysics Letters 62(4) (2003) 512 - 518.
  7. P. Sondergeld, H. Fuess, I. Ishihara, and W. W. Schmahl: Polymorphism and Multiple Twinning of (Et4N)2ZnCl4. Zeitschrift für Kristallographie 216(8) (2001a) 462 - 468.
  8. P. Sondergeld, W. Schranz, A. Troester, H. Kabelka, H.-W. Meyer, M. A. Carpenter, Z. Lodziana, and A. V. Kityk: Dielectric Relaxation and Order-Parameter Dynamics in Lawsonite. Physical Review B: 64(2) (2001b) Art. No. 024105.
  9. H.-W. Meyer, S. Marion, S., P. Sondergeld, M. A. Carpenter, K. S. Knight, S. A. T. Redfern, and M. T. Dove: Displacive Components of the Low-Temperature Phase Transitions in Lawsonite. American Mineralogist 86(4) (2001) 566 - 577.
  10. A. V. Kityk, W. Schranz, P. Sondergeld, D. Havlik, E. K. H. Salje, and J. F. Scott: Low-Frequency Superelasticity and Nonlinear Elastic Behavior of SrTiO3. Physical Review B: 61(2) (2000a) 946 - 956.
  11. A. V. Kityk, W. Schranz, P. Sondergeld, D. Havlik, and J. F. Scott: Nonlinear Elastic Behavior of SrTiO3 Crystals in the Quantum Paraelectric Regime. Europhysics Letters 50(1) (2000b) 41 - 47.
  12. P. Sondergeld, H. Fuess, S. A. Mason, I. Ishihara, and W. W. Schmahl: Pseudo-Symmetries of the Phases of (Et4N)2ZnBr4. Zeitschrift für Naturforschung: A 55(9/10) (2000a) 801 - 809.
  13. P. Sondergeld, W. Schranz, A. V. Kityk, M. A. Carpenter, and E. Libowitzky: Ordering Behavior of the Mineral Lawsonite. Phase Transitions 71(3) (2000b) 189 - 203.
  14. P. Sondergeld, W. Schranz, A. Troester, M. A. Carpenter, E. Libowitzky, and A. V. Kityk: Optical, Elastic, and Dielectric Studies of the Phase Transitions in Lawsonite. Physical Review B: 62(10) (2000c) 6134 - 6147.
  15. H.-W. Meyer, M. A. Carpenter, A. Graeme-Barber, P. Sondergeld, and W. Schranz: Local and Macroscopic Order Parameter Variations Associated with Low-Temperature Phase Transitions in Lawsonite, CaAl2Si2O7(OH)2 · H2O. European Journal of Mineralogy 12(6) (2000) 1139 - 1150.
  16. W. Schranz, P. Sondergeld, A. V. Kityk, and E. K. H. Salje: Elastic Properties of SrTiO3 Crystals at Ultralow Frequencies. Phase Transitions 69(1) (1999) 61 - 76.
  17. I. Pabst, P. Sondergeld, M. Czjzek, and H. Fuess: Preparation and Crystal Structure Determination of [(C2H5)4N]2Hg3Cl8. Zeitschrift für Naturforschung B: 50(1) (1995) 66 - 70.
  18. P. Sondergeld, H. Paulus, and H. Fuess: Crystal Structure of Ammonium Triiodocadmate Monohydrate, NH4CdI3 · H2O. Zeitschrift für Kristallographie 208(2) (1993) 376 - 377.