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Author:

蒋毅坚 (蒋毅坚.) (Scholars:蒋毅坚) | 曾令祉 (曾令祉.) | 王荣平 (王荣平.) | 朱镛 (朱镛.) | 刘玉龙 (刘玉龙.)

Indexed by:

PKU CSCD

Abstract:

从室温至180℃测量了BaTiO_3和Ce:BaTiO_3单晶的偏振喇曼谱,在X(ZZ)Y几何配置下发现了三条频率分别为986,1204和1480cm~(-1)的新谱线.根据喇曼散射截面的温度依赖关系,确认这些新谱线对应二阶喇曼散射,而A_1(TO)谱中位于275和514cm~(-1)处的非对称宽峰则属于一阶喇曼散射.在此基础上,对立方相BaTiO_3的喇曼谱和结构相变机制进行了讨论.通过比较BaTiO_3与Ce:BaTiO_3喇曼谱随温度的变化,发现掺Ce降低了BaTiO_3晶体的Curie温度,与介电系数的测量结果相符.

Keyword:

温度依赖 Ce:BaTiO_3 BaTiO_3 喇曼散射 喇曼谱

Author Community:

  • [ 1 ] 北京工业大学应用物理系 北京100022
  • [ 2 ] 中国科学院物理研究所 北京100080

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Source :

物理学报

Year: 1996

Issue: 08

Page: 1402-1408

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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