EPR DATA ON THE EVOLUTION OF THE OXYGEN DISTRIBUTION IN SINGLE-CRYSTALS OF YBA2CU3O7-DELTA

被引：19

作者：

GARIFULLIN, IA ^{[1
]}

GARIFYANOV, NN ^{[1
]}

ALEKSEEVSKII, NE ^{[1
]}

KIM, SF ^{[1
]}

机构：

[1] ACAD SCI USSR,INST PHYS PROBLEMS,MOSCOW 117973,USSR

来源：

PHYSICA C | 1991年 / 179卷 / 1-3期

关键词：

D O I：

10.1016/0921-4534(91)90004-I

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

EPR of YBa2Cu3O7-delta single crystals has been measured. Transition regions between metallic (delta congruent-to 0) and dielectric (delta congruent-to 1) phases are shown to be the source of the EPR signal for single crystals as well as for ceramic samples. Decreasing of the EPR signal amplitude has been established for the single crystals which were subjected to the controlled heat treatment. The obtained effect was explained by the decrease of the transition region volume due to concentration of dislocations in the vicinity of boundaries between orthorhombic and tetragonal phases.

引用

页码：9 / 14

页数：6

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