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Exchange bias effect in NiO/NiFe2O4 nanocomposites
Gong, W. J.; Liu, W.1; Li, D.; Guo, S.; Liu, X. H.; Feng, J. N.; Li, B.; Zhao, X. G.; Zhang, Z. D.
Corresponding AuthorLiu, W.(wliu@imr.ac.cn)
2011-04-01
Source PublicationJOURNAL OF APPLIED PHYSICS
ISSN0021-8979
Volume109Issue:7Pages:3
AbstractA series of (100-x)NiO/(x)NiFe2O4 nanocomposites (x 0, 2.5, 5, 8.3, 12.5, 25) synthesized by a chemical coprecipitation method have been investigated. The exchange bias field H-E of the nanocomposites reaches a maximum at x = 2.5, and then decreases with increasing x. The decrease of H-E is attributed to the formation of isolated ferrimagnetic NiFe2O4 clusters, which is confirmed by observation with the use of high resolution transmission electron microscopy. The temperature dependence of H-E and the coercivity H-C for pure NiO is different from those with other samples, which is due to the exchange coupling between the uncompensated antiferromagnetic core and disordered surface shell of NiO nanoparticles. (C) 2011 American Institute of Physics. [doi:10.1063/1.3544505]
Funding OrganizationNational Basic Research Program of China ; Ministry of Science and Technology of China ; National Nature Science Foundation of China
DOI10.1063/1.3544505
Indexed BySCI
Language英语
Funding ProjectNational Basic Research Program of China[2010CB934603] ; Ministry of Science and Technology of China ; National Nature Science Foundation of China[50931006] ; National Nature Science Foundation of China[50971123]
WOS Research AreaPhysics
WOS SubjectPhysics, Applied
WOS IDWOS:000289952100242
PublisherAMER INST PHYSICS
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/106273
Collection中国科学院金属研究所
Corresponding AuthorLiu, W.
Affiliation1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Int Ctr Mat Phys, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Gong, W. J.,Liu, W.,Li, D.,et al. Exchange bias effect in NiO/NiFe2O4 nanocomposites[J]. JOURNAL OF APPLIED PHYSICS,2011,109(7):3.
APA Gong, W. J..,Liu, W..,Li, D..,Guo, S..,Liu, X. H..,...&Zhang, Z. D..(2011).Exchange bias effect in NiO/NiFe2O4 nanocomposites.JOURNAL OF APPLIED PHYSICS,109(7),3.
MLA Gong, W. J.,et al."Exchange bias effect in NiO/NiFe2O4 nanocomposites".JOURNAL OF APPLIED PHYSICS 109.7(2011):3.
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