多晶GaMo4Se8的合成、结构和磁性能

IF 2.6 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Magnetochemistry Pub Date : 2023-07-12 DOI:10.3390/magnetochemistry9070182

José F. Malta, M. Henriques, J. A. Paixão, A. P. Gonçalves

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引用次数: 0

摘要

GaMo4Se8是一种空位尖晶石，其中最近已经报道了skyrmions。该化合物属于GaM4X8族，其中M是过渡金属（V或Mo），X是硫族化物（S或Se）。在这项工作中，我们通过创新的两步合成路线获得了多晶形式的纯GaMo4Se8。通过粉末XRD图谱的Rietveld精细化确认了相纯度和化学成分，样品表征已通过SEM分析得到补充。使用DC（VSM）和AC磁强计研究了磁相图，揭示了多晶GaMo4Se8中存在摆线、skyrmionic和铁磁相。

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Synthesis and Structural and Magnetic Properties of Polycrystalline GaMo4Se8

GaMo4Se8, is a lacunar spinel where skyrmions have been recently reported. This compound belongs to the GaM4X8 family, where M is a transition metal (V or Mo) and X is a chalcogenide (S or Se). In this work, we have obtained pure GaMo4Se8 in polycrystalline form through an innovative two-step synthetic route. Phase purity and chemical composition were confirmed through the Rietveld refinement of the powder XRD pattern, the sample characterisation having been complemented with SEM analysis. The magnetic phase diagram was investigated using DC (VSM) and AC magnetometry, which disclosed the presence of cycloidal, skyrmionic and ferromagnetic phases in polycrystalline GaMo4Se8.

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来源期刊

Magnetochemistry Chemistry-Chemistry (miscellaneous)

CiteScore

3.90

自引率

11.10%

发文量

145

审稿时长

11 weeks

期刊介绍： Magnetochemistry (ISSN 2312-7481) is a unique international, scientific open access journal on molecular magnetism, the relationship between chemical structure and magnetism and magnetic materials. Magnetochemistry publishes research articles, short communications and reviews. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.