THE PROPERTY IMPROVEMENT OF BULK HIGH-TEMPERATURE SUPERCONDUCTORS BY PLASMA TREATMENT

被引:2
|
作者
ULYASHIN, AG [1 ]
YANG, ZQ [1 ]
SHLOPAK, NV [1 ]
BUMAY, YA [1 ]
ESEPKIN, VA [1 ]
ALIFANOV, AV [1 ]
STEPANENKO, AV [1 ]
机构
[1] PHYS TECH INST, MINSK 220730, BELARUS
关键词
D O I
10.1016/0921-4534(94)91427-3
中图分类号
O59 [应用物理学];
学科分类号
摘要
An influence of atomic oxygen exposure on the superconductivity of YBa2Cu3O7-x, Bi2Sr2Ca2Cu3O10+y and Bi2Sr2Ca1Cu2O8+z ceramics has been examined by the critical current density J(c), critical temperature T-c and X-ray diffraction measurements. It is shown that exposure of high-T-c superconductors to a low power density oxygen plasma at 473 K and 673 K leads to an increase of both T-c and J(c). The improvement of superconductivity can be explained by the passivation of dangling bonds and defects on grain boundaries of these materials.
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收藏
页码:407 / 408
页数:2
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