TEMPERATURE-DEPENDENT EXAFS STUDY ON ORIENTED YBA2CU3O7-DELTA SUPERCONDUCTOR

被引：2

作者：

MAEDA, H

ISHII, T

MARUYAMA, H

KUBOZONO, Y

YAMAZAKI, H

WARDEN, M

EMURA, S

STERN, EA

HEALD, SM

机构：

[1] OKAYAMA UNIV, FAC ENGN, OKAYAMA 700, JAPAN

[2] UNIV ZURICH, INST PHYS, CH-8057 ZURICH, SWITZERLAND

[3] OSAKA UNIV, INST SCI & IND RES, IBARAKI, OSAKA 567, JAPAN

[4] UNIV WASHINGTON, DEPT PHYS, SEATTLE, WA 98195 USA

[5] BROOKHAVEN NATL LAB, DIV MAT SCI, UPTON, NY 11973 USA

来源：

PHYSICA B | 1995年 / 208卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(94)00873-T

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The polarized Cu K-edge EXAFS measurements on oriented powder of YBa2Cu3O7-delta (T-c = 93 K, 5 mu m grain size) are made as a function of temperature from 20 to 300 K for the a-b plane and the c axis being parallel to the X-ray polarization vector epsilon. Here, we focus on the local structure of Cu-O bonds in the a-b planes. It is found that the average Cu-O (equatorial) distance and cumulants in the CuO4 square plane show anomalous behaviors around T-c.

引用

页码：528 / 530

页数：3

共 9 条

[1] AXIAL OXYGEN CENTERED LATTICE INSTABILITIES AND HIGH-TEMPERATURE SUPERCONDUCTIVITY [J].