REDUCTION OF THE ZERO-PHONON FE-57 MOSSBAUER FRACTION JUST ABOVE TC IN THE (BI,PB)2SR2CA2CU3O10 SUPERCONDUCTOR

被引：12

作者：

SINNEMANN, T

JOB, R

ROSENBERG, M

机构：

[1] Experimentalphysik VI, Ruhr-Universität, 4630 Bochum

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.45.4941

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A decrease of the zero-phonon fraction of the Fe-57 Mossbauer absorption was observed in the temperature range 93-120 K in an Fe-doped (Bi,Pb)2Sr2Ca2Cu3O10-type high-temperature superconductor indicating an anomalous behavior of the lattice vibrations. The isomer shift changes slightly in the same temperature range. The absence of a Goldanskii-Karyagin effect shows that the Fe mean-square displacement is isotropic. Between 150 and 550 K, the temperature dependence of the zero-phonon fraction follows a Debye model with a Mossbauer Debye temperature of 350 +/- 20 K.

引用

页码：4941 / 4944

页数：4

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