Antiferromagnetism in Two-Dimensional, 1T-Phase Iridium Oxide

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-01-05 DOI:10.1109/LMAG.2024.3350438

Charlie Jindrich;Qi Shao;Antonio Ruotolo

引用次数: 0

Abstract

Theoretical studies show that metastable phases of nonmagnetic oxides could exhibit magnetic order when synthesized in two-dimensional (2-D) atomic crystals. In this letter, we report experimental evidence of a nontrivial antiferromagnetic behavior in a 2-D, metastable phase of iridium oxide in which iridium forms a triangular lattice. We compare the magnetic behavior of the crystals in the morphology of 2-D nanosheets with that of the same crystals in the morphology of nanoparticles. At low temperatures, the magnetic moment of nanosheets exceeds that of the nanoparticles while coercivity and remanence collapse, suggesting a transition to an antiferromagnetic phase. Morphology at the nanoscale seems to play a significant role in the magnetic behavior of oxide semiconductors.

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二维 1T 相氧化铱中的反铁磁性

理论研究表明，在二维（2-D）原子晶体中合成非磁性氧化物的逸散相时，可以表现出磁性秩序。在这封信中，我们报告了实验证据，证明氧化铱的二维可蜕变相具有非对称反铁磁行为，其中铱形成了三角形晶格。我们将二维纳米片形态晶体的磁行为与纳米颗粒形态晶体的磁行为进行了比较。在低温下，纳米片的磁矩超过了纳米颗粒的磁矩，同时矫顽力和剩磁坍缩，这表明纳米片过渡到了反铁磁相。纳米尺度的形态似乎在氧化物半导体的磁性行为中起着重要作用。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.