Effect of ozone annealing on FeSr2YCu2O6+y superconductor

IF 1 3区物理与天体物理 Q4 PHYSICS, APPLIED

Physica C-superconductivity and Its Applications Pub Date : 2025-07-20 DOI:10.1016/j.physc.2025.1354766

Yoshiaki Hata , Shun Taguchi , Takashi Mochiku , Hiroshi Yasuoka

引用次数: 0

Abstract

Polycrystalline

{FeSr}_{2} {YCu}_{2} O_{6 + y}

superconductor was oxidized by ozone to improve its superconducting property. Zero resistivity was observed below

T_{c}^{zero}

= 52 K, and diamagnetism was observed below

T_{c}^{MT}

= 70 K. After the sample was ozonized,

T_{c}^{zero}

and

T_{c}^{MT}

increased by 10 and 14 K, respectively. The critical current density in individual grains at 2 K under a 0.1 T field was deduced to be

1.3 \times 1 0^{11} {A/m}^{2}

from the magnetization curve, which was 38 times greater than that of a sample annealed under a high

O_{2}

pressure.

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臭氧退火对FeSr2YCu2O6+y超导体的影响

采用臭氧氧化法对多晶FeSr2YCu2O6+y超导体进行氧化，提高其超导性能。tc0 = 52 K以下为零电阻率，TcMT = 70 K以下为抗磁性。样品经臭氧处理后，Tczero和TcMT分别增加了10 K和14 K。根据磁化曲线，在0.1 T磁场下，单个晶粒在2 K时的临界电流密度为1.3×1011A/m2，是高压下退火样品的38倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physica C-superconductivity and Its Applications 物理-物理：应用

CiteScore

2.70

自引率

11.80%

发文量

102

审稿时长

66 days

期刊介绍： Physica C (Superconductivity and its Applications) publishes peer-reviewed papers on novel developments in the field of superconductivity. Topics include discovery of new superconducting materials and elucidation of their mechanisms, physics of vortex matter, enhancement of critical properties of superconductors, identification of novel properties and processing methods that improve their performance and promote new routes to applications of superconductivity. The main goal of the journal is to publish: 1. Papers that substantially increase the understanding of the fundamental aspects and mechanisms of superconductivity and vortex matter through theoretical and experimental methods. 2. Papers that report on novel physical properties and processing of materials that substantially enhance their critical performance. 3. Papers that promote new or improved routes to applications of superconductivity and/or superconducting materials, and proof-of-concept novel proto-type superconducting devices. The editors of the journal will select papers that are well written and based on thorough research that provide truly novel insights.