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	Large magnetoresistance effects in fe3o4
	Liu,X H1,2; Chang,C F1; Tjeng,L H1; Komarek,A C1; Wirth,S1
刊名	Journal of physics: condensed matter
	2019-03-26
卷号	31期号:22
关键词	Magnetite Magnetoresistance Magnetization Magnetocrystalline effects
ISSN号	0953-8984
DOI	10.1088/1361-648x/ab0cf4
英文摘要	Abstract we investigated the magnetoresistance (mr) of a single crystal of magnetite, fe3o4. in an effort to distinguish between different contributions to the mr the samples were prepared in two different initial magnetic states, i.e. by either zero-field or by field cooling from room temperature. the different magnetic structures in this sample have a dramatic effect on the magnetoresistance: for initially zero-field-cooled conditions a negative mr of about???20% is observed just below the verwey transition at k. for decreasing temperature the mr increases, changes sign at??～78 k and reaches a record positive value of??～45% at around 50 k. this behavior is completely absent in the field-cooled sample. magnetization measurements corroborate an alignment of the easy magnetization direction in applied magnetic fields below as a cause of the strong effects observed in both, magnetization and mr. our results point to a complex interplay of structural and magnetocrystalline effects taking place upon cooling fe3o4 through .
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:0953-8984-31-22-AB0CF4
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2429472
专题	半导体研究所
作者单位	1.Max-Planck-Institute for Chemical Physics of Solids, N?thnitzer Str. 40, 01187 Dresden, Germany 2.State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
推荐引用方式 GB/T 7714	Liu,X H,Chang,C F,Tjeng,L H,et al. Large magnetoresistance effects in fe3o4[J]. Journal of physics: condensed matter,2019,31(22).
APA	Liu,X H,Chang,C F,Tjeng,L H,Komarek,A C,&Wirth,S.(2019).Large magnetoresistance effects in fe3o4.Journal of physics: condensed matter,31(22).
MLA	Liu,X H,et al."Large magnetoresistance effects in fe3o4".Journal of physics: condensed matter 31.22(2019).

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