The Effects of Thermomagnetic Treatment on the Magnetic Properties of Nanocrystalline Fe–O and Fe-Co–O Pressed Compacts

IF 1.6 4区物理与天体物理 Q3 PHYSICS, APPLIED Journal of Superconductivity and Novel Magnetism Pub Date : 2024-12-13 DOI:10.1007/s10948-024-06837-z

A. S. Lileev, J. Kargin, Y. V. Konyukhov, D. G. Zhukov, H. Sanchez Cornejo, Ji Won Seo, S. N. Holmes, J. Albino Aguiar, C. H. W. Barnes, L. De Los Santos Valladares

{"title":"The Effects of Thermomagnetic Treatment on the Magnetic Properties of Nanocrystalline Fe–O and Fe-Co–O Pressed Compacts","authors":"A. S. Lileev, J. Kargin, Y. V. Konyukhov, D. G. Zhukov, H. Sanchez Cornejo, Ji Won Seo, S. N. Holmes, J. Albino Aguiar, C. H. W. Barnes, L. De Los Santos Valladares","doi":"10.1007/s10948-024-06837-z","DOIUrl":null,"url":null,"abstract":"<div>The influence of thermal and thermomagnetic treatment on the magnetic properties of iron—cobalt oxides compacts fabricated by powder metallurgy is studied. The influence of magnetic pulse processing (MPP) on the formation of the phase composition and magnetic properties of nanocrystalline α-Fe (50%) + Fe2O3 (50%); α-Fe (50%) + Fe2O3 (40%) + Co3O4 (10%) and α-Fe (50%) + Fe2O3 (30%) + Co3O4 (20%) pressed powder compacts during synthesis in a high-energy mill and subsequent annealing have been investigated. According to the X-ray diffraction analysis, annealing α-Fe (50%) + Fe2O3 (50%) pressed samples at 250 ℃ in air, promotes the oxidation of α-Fe and FeO to magnetite (Fe3O4). Additional annealing of the compact in vacuum at 250 ℃ increases its remnant magnetization and magnetic anisotropy. Whereas, increasing the concentration of Co3O4 oxide has no strong effect on the coercivity and residual magnetization of the compacts. Eventually, thermomagnetic treatment of the α-Fe (50%) + Fe2O3 (30%) + Co3O4 (20%) system does not improve its magnetic properties.</div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"38 1","pages":""},"PeriodicalIF":1.6000,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10948-024-06837-z.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Superconductivity and Novel Magnetism","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s10948-024-06837-z","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}

引用次数: 0

Abstract

The influence of thermal and thermomagnetic treatment on the magnetic properties of iron—cobalt oxides compacts fabricated by powder metallurgy is studied. The influence of magnetic pulse processing (MPP) on the formation of the phase composition and magnetic properties of nanocrystalline α-Fe (50%) + Fe₂O₃ (50%); α-Fe (50%) + Fe₂O₃ (40%) + Co₃O₄ (10%) and α-Fe (50%) + Fe₂O₃ (30%) + Co₃O₄ (20%) pressed powder compacts during synthesis in a high-energy mill and subsequent annealing have been investigated. According to the X-ray diffraction analysis, annealing α-Fe (50%) + Fe₂O₃ (50%) pressed samples at 250 ℃ in air, promotes the oxidation of α-Fe and FeO to magnetite (Fe₃O₄). Additional annealing of the compact in vacuum at 250 ℃ increases its remnant magnetization and magnetic anisotropy. Whereas, increasing the concentration of Co₃O₄ oxide has no strong effect on the coercivity and residual magnetization of the compacts. Eventually, thermomagnetic treatment of the α-Fe (50%) + Fe₂O₃ (30%) + Co₃O₄ (20%) system does not improve its magnetic properties.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

研究了热处理和热磁处理对粉末冶金制造的铁钴氧化物致密体的磁性能的影响。研究了磁脉冲处理 (MPP) 对纳米晶 α-Fe (50%) + Fe2O3 (50%)、α-Fe (50%) + Fe2O3 (40%) + Co3O4 (10%) 和 α-Fe (50%) + Fe2O3 (30%) + Co3O4 (20%) 压制粉末密实物在高能研磨机中合成和随后退火过程中形成的相组成和磁性能的影响。根据 X 射线衍射分析，α-Fe（50%）+ Fe2O3（50%）压制样品在 250 ℃ 的空气中退火，会促进 α-Fe 和 FeO 氧化成磁铁矿（Fe3O4）。在 250 ℃ 的真空条件下进行额外的退火处理，可提高紧凑型材料的剩磁化率和磁各向异性。而增加 Co3O4 氧化物的浓度对压制物的矫顽力和残余磁化没有太大影响。最终，对 α-Fe (50%) + Fe2O3 (30%) + Co3O4 (20%) 体系进行热磁处理并不能改善其磁性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

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.