{"title":"Structural and magnetic properties of Fe/sub 3-x/Cr/sub x/O/sub 4/ films grown on MgO(001) by molecular beam epitaxy","authors":"C. Huang, D.S. Lee, G. Chern","doi":"10.1109/INTMAG.2005.1464188","DOIUrl":null,"url":null,"abstract":"A continuous change of Fe/Cr ratio was done and the structural and magnetic properties of a series of Fe/sub 3-x/Cr/sub x/O/sub 4/ films grown by molecular beam epitaxy were investigated in this paper. The valence of Cr ion usually forms 3+ state which is different from the most popular divalent ferrites such as Ni-, Co-ferrites. Replacing Fe by Cr in Fe/sub 3-x/Cr/sub x/O/sub 4/ films with lower Cr/Fe ratio (x < 1.5) causes a linear decrease of magnetization. But in the films with x > 1.5 the high valence state of Cr ion leads to instability of spinel structure and the ferrimagnetism no longer exists.","PeriodicalId":273174,"journal":{"name":"INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2005-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"INTERMAG Asia 2005. Digests of the IEEE International Magnetics Conference, 2005.","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/INTMAG.2005.1464188","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A continuous change of Fe/Cr ratio was done and the structural and magnetic properties of a series of Fe/sub 3-x/Cr/sub x/O/sub 4/ films grown by molecular beam epitaxy were investigated in this paper. The valence of Cr ion usually forms 3+ state which is different from the most popular divalent ferrites such as Ni-, Co-ferrites. Replacing Fe by Cr in Fe/sub 3-x/Cr/sub x/O/sub 4/ films with lower Cr/Fe ratio (x < 1.5) causes a linear decrease of magnetization. But in the films with x > 1.5 the high valence state of Cr ion leads to instability of spinel structure and the ferrimagnetism no longer exists.
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