分离FeO4四面体晶格中的自旋有序：以Ba2YFeO5为例

IF 2.5 3区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Magnetism and Magnetic Materials Pub Date : 2025-05-31 DOI:10.1016/j.jmmm.2025.173249

V. Caignaert , Y. Bréard , A.K.K. Kundu , B. Raveau , B. Gonano , V. Hardy

{"title":"分离FeO4四面体晶格中的自旋有序：以Ba2YFeO5为例","authors":"V. Caignaert , Y. Bréard , A.K.K. Kundu , B. Raveau , B. Gonano , V. Hardy","doi":"10.1016/j.jmmm.2025.173249","DOIUrl":null,"url":null,"abstract":"<div><div>The magnetic structure of Ba<sub>2</sub>YFeO<sub>5</sub> below <em>T<sub>N</sub></em> (∼ 5.5 K) is established on the basis of powder neutron diffraction. The only magnetic species in this compound is Fe<sup>3+</sup>, which is distributed onto a 3D framework of FeO<sub>4</sub> tetrahedra separated by YO<sub>6</sub> octahedra. The leading magnetic interaction is the super-super-exchange (SSE) between Fe<sup>3+</sup> cations via two O<sup>2–</sup> anions. The magnetic structure can be described by an alternation of two types of corrugated layers carrying spins being “up” or “down” along a certain direction. This ordering is discussed in connection with the topology and relative strengths of the main SSE couplings. It is found that additional mechanisms, such as crystal-field effects and dipolar interactions, likely come into play to achieve the observed spin order.</div></div>","PeriodicalId":366,"journal":{"name":"Journal of Magnetism and Magnetic Materials","volume":"629 ","pages":"Article 173249"},"PeriodicalIF":2.5000,"publicationDate":"2025-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Spin ordering in a lattice of separated FeO4 tetrahedra: case of Ba2YFeO5\",\"authors\":\"V. Caignaert , Y. Bréard , A.K.K. Kundu , B. Raveau , B. Gonano , V. Hardy\",\"doi\":\"10.1016/j.jmmm.2025.173249\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The magnetic structure of Ba<sub>2</sub>YFeO<sub>5</sub> below <em>T<sub>N</sub></em> (∼ 5.5 K) is established on the basis of powder neutron diffraction. The only magnetic species in this compound is Fe<sup>3+</sup>, which is distributed onto a 3D framework of FeO<sub>4</sub> tetrahedra separated by YO<sub>6</sub> octahedra. The leading magnetic interaction is the super-super-exchange (SSE) between Fe<sup>3+</sup> cations via two O<sup>2–</sup> anions. The magnetic structure can be described by an alternation of two types of corrugated layers carrying spins being “up” or “down” along a certain direction. This ordering is discussed in connection with the topology and relative strengths of the main SSE couplings. It is found that additional mechanisms, such as crystal-field effects and dipolar interactions, likely come into play to achieve the observed spin order.</div></div>\",\"PeriodicalId\":366,\"journal\":{\"name\":\"Journal of Magnetism and Magnetic Materials\",\"volume\":\"629 \",\"pages\":\"Article 173249\"},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2025-05-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Magnetism and Magnetic Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0304885325004810\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Magnetism and Magnetic Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304885325004810","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

摘要

在粉末中子衍射的基础上，建立了在TN （~ 5.5 K）以下的Ba2YFeO5的磁性结构。该化合物中唯一的磁性物质是Fe3+，它分布在由YO6八面体隔开的FeO4四面体的三维框架上。主要的磁相互作用是Fe3+阳离子通过两个O2 -阴离子之间的超-超交换（SSE）。磁性结构可以通过两种类型的波纹层的交替来描述，这些波纹层沿着一定的方向携带“向上”或“向下”的自旋。这种顺序与主要SSE耦合的拓扑结构和相对强度有关。发现了额外的机制，如晶体场效应和偶极相互作用，可能会发挥作用，以实现观察到的自旋顺序。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Spin ordering in a lattice of separated FeO4 tetrahedra: case of Ba2YFeO5

The magnetic structure of Ba₂YFeO₅ below T_N (∼ 5.5 K) is established on the basis of powder neutron diffraction. The only magnetic species in this compound is Fe³⁺, which is distributed onto a 3D framework of FeO₄ tetrahedra separated by YO₆ octahedra. The leading magnetic interaction is the super-super-exchange (SSE) between Fe³⁺ cations via two O^2– anions. The magnetic structure can be described by an alternation of two types of corrugated layers carrying spins being “up” or “down” along a certain direction. This ordering is discussed in connection with the topology and relative strengths of the main SSE couplings. It is found that additional mechanisms, such as crystal-field effects and dipolar interactions, likely come into play to achieve the observed spin order.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Journal of Magnetism and Magnetic Materials 物理-材料科学：综合

CiteScore

5.30

自引率

11.10%

发文量

1149

审稿时长

59 days

期刊介绍： The Journal of Magnetism and Magnetic Materials provides an important forum for the disclosure and discussion of original contributions covering the whole spectrum of topics, from basic magnetism to the technology and applications of magnetic materials. The journal encourages greater interaction between the basic and applied sub-disciplines of magnetism with comprehensive review articles, in addition to full-length contributions. In addition, other categories of contributions are welcome, including Critical Focused issues, Current Perspectives and Outreach to the General Public. Main Categories: Full-length articles: Technically original research documents that report results of value to the communities that comprise the journal audience. The link between chemical, structural and microstructural properties on the one hand and magnetic properties on the other hand are encouraged. In addition to general topics covering all areas of magnetism and magnetic materials, the full-length articles also include three sub-sections, focusing on Nanomagnetism, Spintronics and Applications. The sub-section on Nanomagnetism contains articles on magnetic nanoparticles, nanowires, thin films, 2D materials and other nanoscale magnetic materials and their applications. The sub-section on Spintronics contains articles on magnetoresistance, magnetoimpedance, magneto-optical phenomena, Micro-Electro-Mechanical Systems (MEMS), and other topics related to spin current control and magneto-transport phenomena. The sub-section on Applications display papers that focus on applications of magnetic materials. The applications need to show a connection to magnetism. Review articles: Review articles organize, clarify, and summarize existing major works in the areas covered by the Journal and provide comprehensive citations to the full spectrum of relevant literature.