X-RAY THERMAL-DIFFUSE-SCATTERING STUDY OF SOFT MODES IN PARAELECTRIC BATIO3

被引：15

作者：

TAKESUE, N ^{[1
]}

MAGLIONE, M ^{[1
]}

CHEN, H ^{[1
]}

机构：

[1] UNIV BOURGOGNE,PHYS LAB,F-21004 DIJON,FRANCE

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.51.6696

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Anomalous x-ray thermal diffuse scattering (TDS) from the paraelectric BaTiO3 has been measured as a function of temperature using synchrotron radiation. Sheets of intensities that were previously reported have been confirmed. The origin of the observed TDS intensities is attributed to the soft on-(100) TA modes and overdamped [010]TO mode for reduced wave vector q>0.25 and <0.25, respectively. In agreement with the previous neutron inelastic scattering experiment, our results support the notion of the one-dimensionally correlated optic motion of atoms. © 1995 The American Physical Society.

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页码：6696 / 6699

页数：4

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