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Abstract <p>This paper presents the results of an analysis of pinning mechanisms at a level of certain types of radiation defects during irradiation of open YBa<sub>2</sub>Cu<sub>3</sub>O<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(_{{7 - x}}\)</EquationSource> <!--NuclPhys2509072StarikovskIIIa-m1--> </InlineEquation> (YBCO) films on a metal substrate with iron ions. It is shown that the introduction of additional pinning centers without large-scale overlap of potential pit defects leads to an increase in the critical current for columnar and conical defects of various sizes. It is found that, depending on the magnitude of the external magnetic field, the relative increment in the critical current of the samples varies from 4 to 47%. At the same time, deeper defects lead to an improvement in the transport properties of a high temperature superconductor (HTS) in higher fields. In higher magnetic fields, under conditions of weak intrinsic pinning and comparatively low anisotropy of the HTS properties, the increase in the critical current of YBCO for columnar defects is several times lower than for conical defects.</p>

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Effect of Iron Ion Irradiation on Critical Currents of High-Temperature Superconductors Based on the YВа2Cu3O7–x Compound

  • 期刊论文

  • 发表日期：

    2025年12月21日

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  • A. S. Starikovskii,
  • D. A. Abin,
  • A. Y. Malyavina,
  • D. A. Aleksandrov,
  • I. V. Martirosian

摘要

Abstract

This paper presents the results of an analysis of pinning mechanisms at a level of certain types of radiation defects during irradiation of open YBa2Cu3O \(_{{7 - x}}\) (YBCO) films on a metal substrate with iron ions. It is shown that the introduction of additional pinning centers without large-scale overlap of potential pit defects leads to an increase in the critical current for columnar and conical defects of various sizes. It is found that, depending on the magnitude of the external magnetic field, the relative increment in the critical current of the samples varies from 4 to 47%. At the same time, deeper defects lead to an improvement in the transport properties of a high temperature superconductor (HTS) in higher fields. In higher magnetic fields, under conditions of weak intrinsic pinning and comparatively low anisotropy of the HTS properties, the increase in the critical current of YBCO for columnar defects is several times lower than for conical defects.