[A4-O3] Slot 03

[A4-O3-03] Two Coexisting Mechanisms for Ferroelectric Phase Transition in Li₂SrNb₂O₇

*Yasuhide Mochizuki¹, Takayuki Nagai², Hirokazu Shirakuni², Akitoshi Nakano², Fumiyasu Oba¹, Ichiro Terasaki², Hiroki Taniguchi² (1. Tokyo Inst. of Tech. (Japan), 2. Nagoya Univ. (Japan))

キーワード：Layered Perovskite, Improper Ferroelectricity, Rotational Distortions, Quantum Paraelectricity