{"title":"Structural and Magnetic Properties of Sr3-xLaxCo2Fe24O41 Hexaferrite","authors":"Anupriya Choudhary, Puneet Sharma, Bhupendra Chudasama","doi":"10.1007/s10948-024-06748-z","DOIUrl":null,"url":null,"abstract":"<div><p>In the present work, La<sup>3+</sup> ion substituted strontium Z-type hexaferrites (Sr<sub>3-<i>x</i></sub>La<sub><i>x</i></sub>Co<sub>2</sub>Fe<sub>24</sub>O<sub>41</sub> (<i>x</i> = 0, 0.05, 0.10, 0.15, 0.20, and 0.25)) have been synthesized using solid-state reaction method. The effect of substitution on its structural and magnetic properties was investigated. X-ray diffraction (XRD) pattern confirms the formation of single-phase Z-type hexaferrite. The XPS spectra provide the evidence for formation of Fe<sup>2+</sup> in La-substituted SrZ hexaferrites. FESEM micrographs of as prepared samples showed a reduction in grain size with the increasing La substitution. The behavior of substitution at various crystallographic sites was analyzed by Raman spectroscopy. The increase in saturation magnetization (<i>M</i><sub><i>s</i></sub>) and coercivity (<i>H</i><sub><i>c</i></sub>) was observed with increasing La content from <i>x</i> = 0 to <i>x</i> = 0.25.</p></div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"37 5-7","pages":"1215 - 1222"},"PeriodicalIF":1.6000,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","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/s10948-024-06748-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
In the present work, La3+ ion substituted strontium Z-type hexaferrites (Sr3-xLaxCo2Fe24O41 (x = 0, 0.05, 0.10, 0.15, 0.20, and 0.25)) have been synthesized using solid-state reaction method. The effect of substitution on its structural and magnetic properties was investigated. X-ray diffraction (XRD) pattern confirms the formation of single-phase Z-type hexaferrite. The XPS spectra provide the evidence for formation of Fe2+ in La-substituted SrZ hexaferrites. FESEM micrographs of as prepared samples showed a reduction in grain size with the increasing La substitution. The behavior of substitution at various crystallographic sites was analyzed by Raman spectroscopy. The increase in saturation magnetization (Ms) and coercivity (Hc) was observed with increasing La content from x = 0 to x = 0.25.
本研究采用固态反应方法合成了被 La3+ 离子取代的 Z 型锶六铁氧体（Sr3-xLaxCo2Fe24O41（x = 0、0.05、0.10、0.15、0.20 和 0.25））。研究了取代对其结构和磁性能的影响。X 射线衍射（XRD）图证实了单相 Z 型六价铁氧体的形成。XPS 光谱证明在 La 取代的 SrZ 六铁氧体中形成了 Fe2+。制备样品的 FESEM 显微照片显示，晶粒尺寸随着 La 取代量的增加而减小。拉曼光谱分析了不同晶体学位点的替代行为。从 x = 0 到 x = 0.25，随着 La 含量的增加，观察到饱和磁化（Ms）和矫顽力（Hc）的增加。
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.
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