新型含铀高熵合金超导体UNbTiVZr异常上临界场

IF 9.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Acta Materialia Pub Date : 2025-09-14 DOI:10.1016/j.actamat.2025.121519

Wojciech Nowak , Bartosz Rusin , Daniel Gnida , Adam Pikul , Rafał Idczak

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引用次数: 0

摘要

介绍了一种新型含铀等摩尔a型高熵合金（HEA）超导体UNbTiVZr的物理和结构特性。据我们所知，之前只有一项研究报告了非等摩尔含铀HEA，使UNbTiVZr成为此类的第一个等摩尔体系。通过x射线衍射、能量色散x射线能谱、电阻率、磁化强度和比热测量对合金进行了表征。结果表明，该合金具有II型超导性，临界温度约为2k，上临界场异常高，采用了经扩散率分布修正的werthmer - helfand - hohenber模型进行了描述。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Anomalous upper critical field in UNbTiVZr, a new high entropy alloy superconductor containing uranium

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Anomalous upper critical field in UNbTiVZr, a new high entropy alloy superconductor containing uranium

The paper describes the physical and structural properties of UNbTiVZr, a novel equimolar type-A high-entropy alloy (HEA) superconductor containing uranium. To our knowledge, only one prior study has reported a non-equimolar uranium-containing HEA, making UNbTiVZr the first equimolar system of this kind. The alloy was characterized by X-ray diffraction, energy dispersive X-ray spectroscopy, electrical resistivity, magnetization and specific heat measurements. It has been determined that the alloy exhibits type II superconductivity, with a critical temperature of about 2 K and an anomalously high upper critical field, for the description of which the Werthamer–Helfand–Hohenber model, modified by the diffusivity distribution, was used.

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来源期刊

Acta Materialia 工程技术-材料科学：综合

CiteScore

16.10

自引率

8.50%

发文量

801

审稿时长

53 days

期刊介绍： Acta Materialia serves as a platform for publishing full-length, original papers and commissioned overviews that contribute to a profound understanding of the correlation between the processing, structure, and properties of inorganic materials. The journal seeks papers with high impact potential or those that significantly propel the field forward. The scope includes the atomic and molecular arrangements, chemical and electronic structures, and microstructure of materials, focusing on their mechanical or functional behavior across all length scales, including nanostructures.