TIME-DEPENDENT SUPERCONDUCTING BEHAVIOR OF OXYGEN-DEFICIENT YBA2CU3OX - POSSIBLE ANNEALING OF OXYGEN VACANCIES AT 300-K

被引：210

作者：

VEAL, BW

YOU, H

PAULIKAS, AP

SHI, H

FANG, Y

DOWNEY, JW

机构：

[1] Materials Science Division, Argonne National Laboratory, Argonne

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.42.4770

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Oxygen stoichiometries in single crystals of YBa2Cu3Ox are controlled by quenching from an O2-N2 atmosphere at 520°C to liquid nitrogen. After quenching, the superconducting behavior and lattice parameters are found to be time dependent. Tc increases as much as 15 K in a period of several days. Apparently, annealing, with increasing oxygen vacancy order, occurs at room temperature. © 1990 The American Physical Society.

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页码：4770 / 4773

页数：4

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