YBa2Cu3O7−X 500–600 K Isostructural Phase Transition and Its Influence on Critical-Current Value

被引：0

作者：

E. Dul'kin

机构：

[1] The Hebrew University of Jerusalem,Advanced School of Applied Science

[2] Givat Ram Campus,undefined

[3] Bergman Building,undefined

来源：

Journal of Superconductivity | 2003年 / 16卷

关键词：

voltage–current characteristic; critical current; acoustic emission; phase-work hardening; dislocation;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

YBa2Cu3O7−X ceramic samples voltage–current characteristics at 77 K and acoustic emission activity during thermocycling 500–600 K region have been studied. Partial oxygen sorption by these samples through heating has been established by critical-current value and acoustic emission activity at 540–550 K. During thermocycling an acoustic emission maximums have been observed on 3rd and 6th thermocycles, and these maximums correlate with some decrease of the critical-current value. It is shown that observed acoustic emission maximums are because of a phase-work hardening during thermocycling of these samples. A mechanism of this phase-work hardening influencing the critical-current value in YBa2Cu3O7−X ceramic samples is discussed.

引用

页码：953 / 956

页数：3

共 40 条

[1]

Arzhavitin I. M.(1992)undefined Superconductivity 5 86-undefined

[2]

Razdovski I. I.(1992)undefined Physica C 196 7-undefined

[3]

Finkel V. A.(1992)undefined Superconductivity 5 1936-undefined

[4]

Bonetti E.(1989)undefined Phys. Solid State 31 597-undefined

[5]

Campari E. G.(1990)undefined Superconductivity 3 60-undefined

[6]

Mantovani S.(1990)undefined Sov. Phys. Solid State 32 1703-undefined

[7]

Ivanov O. N.(1992)undefined Superconductivity 5 1139-undefined

[8]

Dybova O. V.(1990)undefined J. Mater. Res. 5 2066-undefined

[9]

Kudryash V. I.(1990)undefined Physica C 171 449-undefined

[10]

Bobrov V. S.(1992)undefined Superconductivity 5 182-undefined

← 1 2 3 4 →