Formation of Nb3Sn Nanocrystalline Layers in Cu-Sn/Nb Superconducting Composites Under Different Diffusion Annealing Modes

IF 1.6 4区物理与天体物理 Q3 PHYSICS, APPLIED

Journal of Superconductivity and Novel Magnetism Pub Date : 2025-03-27 DOI:10.1007/s10948-025-06962-3

Irina Deryagina, Elena Popova, Evgeniya Valova-Zaharevskaya, Evgeny Patrakov, Ildar Abdyukhanov, Anastasia Tsapleva, Maxim Alexeev

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引用次数: 0

Abstract

Nb₃Sn-based superconductors are used in high-field magnets of various research projects, including magnetic systems of Tokamak thermonuclear fusion and accelerators for high-energy physics. An important task aimed at improving the current-carrying characteristics of the wire is to study the effect of design features and alloying of multifilamentary strands and the heat treatment modes on the formation of superconducting layers with an optimal structure, namely, with fine equiaxed grains of Nb₃Sn phase with close to stoichiometry composition. This study presents the results of scanning and transmission electron microscopy examination of the structure and morphology of Nb₃Sn layers in multifilamentary superconducting bronze-processed strands, with coupled Nb filaments doped with Ti, after various heat treatment (diffusion annealing) modes. The study used single-stage and two-stage annealing with different temperatures and durations.

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来源期刊

Journal of Superconductivity and Novel Magnetism 物理-物理：凝聚态物理

CiteScore

3.70

自引率

11.10%

发文量

342

审稿时长

3.5 months

期刊介绍： The Journal of Superconductivity and Novel Magnetism serves as the international forum for the most current research and ideas in these fields. This highly acclaimed journal publishes peer-reviewed original papers, conference proceedings and invited review articles that examine all aspects of the science and technology of superconductivity, including new materials, new mechanisms, basic and technological properties, new phenomena, and small- and large-scale applications. Novel magnetism, which is expanding rapidly, is also featured in the journal. The journal focuses on such areas as spintronics, magnetic semiconductors, properties of magnetic multilayers, magnetoresistive materials and structures, magnetic oxides, etc. Novel superconducting and magnetic materials are complex compounds, and the journal publishes articles related to all aspects their study, such as sample preparation, spectroscopy and transport properties as well as various applications.