RAMAN-SCATTERING STUDY OF BACEO3 AND SRCEO3

被引：64

作者：

SCHERBAN, T

VILLENEUVE, R

ABELLO, L

LUCAZEAU, G

机构：

[1] LIESG ENSEEG, 38402 St. Martin d'Hères

来源：

SOLID STATE COMMUNICATIONS | 1992年 / 84卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0038-1098(92)90133-T

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Room temperature Raman scattering spectra of the perovskite-structered cerates BaCeO3 and SrCeO3 are compared and analyzed, based on factor group analysis of the space group D2h16 . High temperature spectra of BaCeO3, collected in the temperature range 25-800-degrees-C, indicate that the material undergoes an orthorhombic to tetragonal (D2h --> D4h) Phase transition in this range. A tetrogonal to cubic (D4h --> O(h)) phase transition is expected at temperatures slightly above 800-degrees-C.

引用

页码：341 / 344

页数：4

共 12 条

[1] VIBRATIONAL SPECTRA OF HALIDES AND COMPLEX HALIDES .4. SOME TETRAHALOGENOTHALLATES AND EFFECTS OF D-ELECTRONIC STRUCTURE ON FREQUENCIES OF HEXACHLOROMETALLATES [J].