{"title":"Co(Ga2-xFex)O4尖晶石铁氧体中反铁磁-铁磁转变及磁性大幅增强的实现","authors":"Chaocheng Liu, Jiyu Hu, Haifeng Xu","doi":"10.1007/s10948-023-06522-7","DOIUrl":null,"url":null,"abstract":"<div><p>The modulation of ions substitution has been regarded as a promising route to induce magnetic transition and tailor intrinsic properties for spinel ferrites as expected. Herein, Fe-substituted Co(Ga<sub>2-<i>x</i></sub>Fe<sub><i>x</i></sub>)O<sub>4</sub> spinel ferrites have been successfully prepared by a solid-state method. It is shown that the lattice constant increases gradually with the rising amount of Fe substitution due to a larger ionic radius of Fe than that of Ga. More importantly, a significant improvement in magnetic properties has been achieved under the effort of Fe substitution, especially in intrinsic coercivity (<i>H</i><sub>c</sub>). Correspondingly, the saturation magnetization (<i>M</i><sub>s</sub>), <i>H</i><sub>c</sub>, and Curie temperature (<i>T</i><sub>C</sub>) increase from 11.01 emu/g, 0.29 kOe, and 10 K to 86.05 emu/g, 11.45 kOe, and 318 K respectively based on Fe substitution. Our work realizes a marked modulation of magnetic properties in Co(Ga<sub>2-<i>x</i></sub>Fe<sub><i>x</i></sub>)O<sub>4</sub>, providing a fundamental strategy for magnetism tuning as well as the development of magnetic devices.</p></div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"36 3","pages":"965 - 974"},"PeriodicalIF":1.6000,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Realizing Antiferromagnetic-Ferromagnetic Transition and Giant Enhancement of Magnetism in Co(Ga2-xFex)O4 Spinel Ferrites\",\"authors\":\"Chaocheng Liu, Jiyu Hu, Haifeng Xu\",\"doi\":\"10.1007/s10948-023-06522-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The modulation of ions substitution has been regarded as a promising route to induce magnetic transition and tailor intrinsic properties for spinel ferrites as expected. Herein, Fe-substituted Co(Ga<sub>2-<i>x</i></sub>Fe<sub><i>x</i></sub>)O<sub>4</sub> spinel ferrites have been successfully prepared by a solid-state method. It is shown that the lattice constant increases gradually with the rising amount of Fe substitution due to a larger ionic radius of Fe than that of Ga. More importantly, a significant improvement in magnetic properties has been achieved under the effort of Fe substitution, especially in intrinsic coercivity (<i>H</i><sub>c</sub>). Correspondingly, the saturation magnetization (<i>M</i><sub>s</sub>), <i>H</i><sub>c</sub>, and Curie temperature (<i>T</i><sub>C</sub>) increase from 11.01 emu/g, 0.29 kOe, and 10 K to 86.05 emu/g, 11.45 kOe, and 318 K respectively based on Fe substitution. Our work realizes a marked modulation of magnetic properties in Co(Ga<sub>2-<i>x</i></sub>Fe<sub><i>x</i></sub>)O<sub>4</sub>, providing a fundamental strategy for magnetism tuning as well as the development of magnetic devices.</p></div>\",\"PeriodicalId\":669,\"journal\":{\"name\":\"Journal of Superconductivity and Novel Magnetism\",\"volume\":\"36 3\",\"pages\":\"965 - 974\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2023-03-04\",\"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/s10948-023-06522-7\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Superconductivity and Novel Magnetism","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s10948-023-06522-7","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}
Realizing Antiferromagnetic-Ferromagnetic Transition and Giant Enhancement of Magnetism in Co(Ga2-xFex)O4 Spinel Ferrites
The modulation of ions substitution has been regarded as a promising route to induce magnetic transition and tailor intrinsic properties for spinel ferrites as expected. Herein, Fe-substituted Co(Ga2-xFex)O4 spinel ferrites have been successfully prepared by a solid-state method. It is shown that the lattice constant increases gradually with the rising amount of Fe substitution due to a larger ionic radius of Fe than that of Ga. More importantly, a significant improvement in magnetic properties has been achieved under the effort of Fe substitution, especially in intrinsic coercivity (Hc). Correspondingly, the saturation magnetization (Ms), Hc, and Curie temperature (TC) increase from 11.01 emu/g, 0.29 kOe, and 10 K to 86.05 emu/g, 11.45 kOe, and 318 K respectively based on Fe substitution. Our work realizes a marked modulation of magnetic properties in Co(Ga2-xFex)O4, providing a fundamental strategy for magnetism tuning as well as the development of magnetic devices.
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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