SHARP ANGULAR SENSITIVITY OF PINNING DUE TO TWIN BOUNDARIES IN BA2YCU3O7

被引：91

作者：

GYORGY, EM ^{[1
]}

VANDOVER, RB ^{[1
]}

SCHNEEMEYER, LF ^{[1
]}

WHITE, AE ^{[1
]}

OBRYAN, HM ^{[1
]}

FELDER, RJ ^{[1
]}

WASZCZAK, JV ^{[1
]}

RHODES, WW ^{[1
]}

HELLMAN, F ^{[1
]}

机构：

[1] UNIV CALIF SAN DIEGO,DEPT PHYS,LA JOLLA,CA 92093

来源：

APPLIED PHYSICS LETTERS | 1990年 / 56卷 / 24期

关键词：

D O I：

10.1063/1.103257

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have measured the pinning force due to twin boundaries by measuring the magnetic torque produced when a field is applied perpendicular to the c axis and rotated with respect to the ab axes. At 76 K, the torque increases roughly fourfold, when the field is within 2°of the parallel to the twin boundaries. This peak is absent at 27 K. Irradiation with 5×101 6 cm-2 3.5 MeV protons increases the overall critical current and eliminates the peaks observed at 76 K.

引用

页码：2465 / 2467

页数：3

共 11 条

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