Ferroelectric Phase Transition in Perovskite Oxide CdTiO 3
Ferroelectric Phase Transition in Perovskite Oxide CdTiO 3
复制标题
钙钛矿氧化物 CdTiO 3 中的铁电相变
DOI：
10.1080/713716134
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发表时间：
2002
期刊：
影响因子：
0.8
通讯作者：
M. Itoh
中科院分区：
文献类型：
--
作者：
Y. Shan;H. Mori;H. Imoto;M. Itoh
采用熔剂法合成了CdTiO 3 单晶。所得单晶在室温下呈现空间群为Pnma的斜方钙钛矿结构，在80 K附近出现介电异常，与多晶样品相似。研究了沿三个方向的介电常数的温度依赖性，并观察到介电各向异性。测量的介电常数的比较表明CdTiO 3 的极化方向沿着空间群Pnma的b轴。
Single crystals of CdTiO 3 were synthesized by a flux method. The obtained single crystals showed the orthorhombic perovskite structure with the space group Pnma at room temperature, and a dielectric anomaly appeared near 80 K, which was similar to the polycrystalline samples. The temperature dependence of the dielectric constants along three directions was investigated, and a dielectric anisotropy was observed. The comparison of the measured dielectric constants indicates that the polarization of CdTiO 3 is directed along the b axis of the space group Pnma .