Acoustic—Soft-Optic Mode Interactions in Ferroelectric BaTiO3
Acoustic—Soft-Optic Mode Interactions in Ferroelectric BaTiO3
复制标题
铁电 BaTiO3 中的声-软光模式相互作用
DOI：
10.1103/physrevlett.26.1331
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发表时间：
1971
影响因子：
8.6
通讯作者：
P. Lazay
中科院分区：
文献类型：
--
作者：
P. Fleury;P. Lazay
研究了BaTiO 3四元系铁电体在7 ~ 133 ℃温度范围内的拉曼和布里渊光谱.除了提供的声速和吸收的温度依赖性，这些光谱表现出几个异常，这是定量的声学声子和负责的铁电相变BaTi O 3的软光学模式之间的相互作用。
The Raman and Brillouin spectra of tetragonal ferroelectric BaTi O 3 have been studied between 7 and 133 C. In addition to providing the temperature dependences of the sound velocity and absorption, these spectra exhibit several anomalies which are quantitatively attributable to the interaction between acoustic phonons and the soft optic mode responsible for the ferroelectric phase transition in BaTi O 3.