Alternating current losses in MgB2 added bulk (Bi,Pb)-2223 superconductor

IF 2.1 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Bulletin of Materials Science Pub Date : 2025-09-23 DOI:10.1007/s12034-025-03475-6

D Tripathi, B C Joshi, Mohd Saif, Himanshu Pandey, Shalini Raj, T K Dey

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引用次数: 0

Abstract

This study investigates the alternating current (AC) losses in pristine and MgB₂-added bulk Bi_1.8Pb_0.20Sr₂Ca₂Cu₃O_10+δ ((Bi, Pb)-2223) superconductors at 77 K. Polycrystalline pellets of (Bi, Pb)-2223 and 0.5, 1 and 2 wt.% MgB₂-added bulk (Bi, Pb)-2223 were synthesized using a solid-state reaction process. X-Ray diffraction (XRD) analysis confirms the presence of (Bi, Pb)-2223 as the primary phase in the crystal structure. Electrical resistivity measurements between 77 and 300 K reveals a decrease in the transition temperature (T_c) and an increase in the transition width (∆T_c) of (Bi, Pb)-2223 with increasing MgB₂ concentration. Diamagnetic response of the samples indicates a decrease in the superconducting volume fraction of (Bi, Pb)-2223 upon MgB₂ addition. Magnetic AC losses were measured as a function of applied magnetic field and frequency. The eddy loss contribution, estimated using the expression reported by Chattopadhyay and Dey [1,15,,2] has a measly contribution and hence confirms the dominant role of hysteresis loss in total magnetic AC losses.

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MgB2添加块体(Bi,Pb)-2223超导体的交流电损耗

本文研究了原始和添加mgb2的块体Bi1.8Pb0.20Sr2Ca2Cu3O10+δ ((Bi, Pb)-2223)超导体在77 K下的交流电损耗。采用固相反应法制备了(Bi, Pb)-2223多晶球团和添加了0.5、1和2 wt.% mgb2的块体(Bi, Pb)-2223。x射线衍射（XRD）分析证实了(Bi, Pb)-2223是晶体结构中的初级相。在77 ~ 300 K范围内的电阻率测量表明，随着MgB2浓度的增加，(Bi, Pb)-2223的转变温度（Tc）降低，转变宽度（∆Tc）增加。样品的抗磁响应表明，加入MgB2后，(Bi, Pb)-2223的超导体积分数降低。磁交流损耗作为外加磁场和频率的函数进行了测量。用Chattopadhyay和Dey[1,15,2]报道的表达式估计的涡流损耗贡献贡献很小，因此证实了磁滞损耗在总磁交流损耗中的主导作用。

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

Bulletin of Materials Science 工程技术-材料科学：综合

CiteScore

3.40

自引率

5.60%

发文量

209

审稿时长

11.5 months

期刊介绍： The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.