Phonon modes in KH2PO4 - type crystals

B. Wyncke

doi:10.1117/12.2297980

4 December 2017 Phonon modes in KH₂PO₄ - type crystals

B. Wyncke

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.

Citation Download Citation

B. Wyncke "Phonon modes in KH₂PO₄ - type crystals", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 15767F (4 December 2017); https://doi.org/10.1117/12.2297980

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