4 December 2017 Phonon modes in KH2PO4 - type crystals
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Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 15767F (2017) https://doi.org/10.1117/12.2297980
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland
Abstract
Potassium dihydrogen phosphate (KDP) undergoes a paraelectric (PE) to ferroelectric (FE) phase transition at 123 K. The primitive cell containing two formula units changes from the tetragonal symmetry (I42d) in the PE phase, to the orthorhombic symmetry (Fdd2) in the FE phase. The optical fourfold c axis of the PE phase, becomes the ferroelectric axis below 123 K.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
B. Wyncke, B. Wyncke, } "Phonon modes in KH2PO4 - type crystals", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 15767F (4 December 2017); doi: 10.1117/12.2297980; https://doi.org/10.1117/12.2297980
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