ANALYSIS OF PINNING EFFECTS IN YBA2CU3O7-DELTA SINGLE-CRYSTALS AFTER FAST-NEUTRON IRRADIATION

被引：66

作者：

SAUERZOPF, FM ^{[1
]}

WIESINGER, HP ^{[1
]}

WEBER, HW ^{[1
]}

CRABTREE, GW ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439

来源：

PHYSICAL REVIEW B | 1995年 / 51卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.51.6002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Flux-pinning effects were studied by sequentially irradiating a YBa2Cu3O7- single crystal to fast neutron fluences of 8×1021 m-2. From superconducting quantum interference device magnetometry, the transition temperature Tc and the magnetic moments were obtained for fields parallel and perpendicular to the crystallographic c axis. Irreversibility lines and critical current densities were evaluated as a function of neutron fluence. In order to explain the data, a qualitative model is developed that is based on the layered structure of the system and the nature of the various defects introduced by irradiation. Because of the dominating influence of large defect cascades on flux pinning, different summation models have to be employed, depending on temperature, field orientation, field strength, and pin density. © 1995 The American Physical Society.

引用

页码：6002 / 6012

页数：11

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