OXYGEN PHONONS IN ORTHORHOMBIC AND TETRAGONAL TL2BA2CUO6 INVESTIGATED BY RAMAN-SCATTERING

被引：9

作者：

KALL, M

BORJESSON, L

STROM, C

ERIKSSON, S

JOHANSSON, LG

机构：

[1] CHALMERS UNIV TECHNOL,DEPT INORGAN CHEM,S-41296 GOTHENBURG,SWEDEN

[2] UNIV GOTEBORG,S-41296 GOTHENBURG,SWEDEN

来源：

PHYSICA C | 1994年 / 220卷 / 1-2期

关键词：

D O I：

10.1016/0921-4534(94)90893-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The phonon spectrum of the Tl2Ba2CuO6 compound has been investigated by Raman scattering for variations in the Tl and oxygen contents. We observe large changes of the vibrational frequencies and lineshapes of the apical oxygen, O(2), and the oxygen in the double TlO layer, O(3), for a Tl content which coincides with the orthorhombic-tetragonal phase transition. Oxygen annealed samples (T-c approximate to 20 K) exhibit slightly lower frequencies of the O(2) and O(3) modes than the as-sintered samples (T-c approximate to 70K).

引用

页码：131 / 137

页数：7

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