Yuri S. Orlov, Vyacheslav A. Dudnikov, Sergey N. Vereshchagin, Yuri N. Ustyuzhanin, Sergey V. Nikolaev, Sergey M. Zharkov, Mikhail N. Volochaev, Galina M. Zeer, Sergey Yu. Gavrilkin, Alexey Yu. Tsvetkov and Sergey G. Ovchinnikov
{"title":"Ferromagnetism in LaCoO3: relationship between the crystal structure, morphology and magnetic properties","authors":"Yuri S. Orlov, Vyacheslav A. Dudnikov, Sergey N. Vereshchagin, Yuri N. Ustyuzhanin, Sergey V. Nikolaev, Sergey M. Zharkov, Mikhail N. Volochaev, Galina M. Zeer, Sergey Yu. Gavrilkin, Alexey Yu. Tsvetkov and Sergey G. Ovchinnikov","doi":"10.1039/D4DT03135K","DOIUrl":null,"url":null,"abstract":"<p >It is known that in a weak magnetic field (<em>H</em> < 1 kOe) at <em>T</em> < <em>T</em><small><sub>C</sub></small> ≈ 87 K, rare-earth cobalt oxide LaCoO<small><sub>3</sub></small> has ferromagnetic properties. The physical mechanism of the emergence of ferromagnetism in LaCoO<small><sub>3</sub></small> still remains unclear. We provided experimental evidence of the ferromagnetism and crystal lattice interconnection – the cause of ferromagnetic ordering is near-surface (defects) structural stresses. A theoretical model is proposed, within the framework of which the mechanism of the emergence of the magnetically ordered state in LaCoO<small><sub>3</sub></small> is discussed.</p>","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":" 11","pages":" 4530-4541"},"PeriodicalIF":3.3000,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dalton Transactions","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/dt/d4dt03135k","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
It is known that in a weak magnetic field (H < 1 kOe) at T < TC ≈ 87 K, rare-earth cobalt oxide LaCoO3 has ferromagnetic properties. The physical mechanism of the emergence of ferromagnetism in LaCoO3 still remains unclear. We provided experimental evidence of the ferromagnetism and crystal lattice interconnection – the cause of ferromagnetic ordering is near-surface (defects) structural stresses. A theoretical model is proposed, within the framework of which the mechanism of the emergence of the magnetically ordered state in LaCoO3 is discussed.
期刊介绍：
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.
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