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The A-site disorder effects and enhanced magnetoresistance in La0.55Sr0.45MnO3
Wang, K. F.1; Luo, W. Z.1; Dong, S.1; Li, D.2,3; Zhang, Z. D.2,3; Ren, Z. F.1,4; Liu, J. -M.1,2
Corresponding AuthorWang, K. F.(wangkf@nju.edu.cn)
2010-10-01
Source PublicationTHIN SOLID FILMS
ISSN0040-6090
Volume518Issue:24Pages:E38-E41
AbstractBy modulating the A-site cational size mismatch we introduce different A-site disorder strengths in large-bandwidth manganites such as La0.55Sr0.45MnO3, which are regarded as the typical ferromagnetic double exchange (DE) systems due to the relative large A-site cational mean radius ( = 1.23 angstrom for La0.55Sr0.45MnO3). It is revealed that the increasing A-site disorder doesn't induce remarkable macroscopic change of the crystallographic structure and lattice constants, but causes notable change of the magnetotransport properties by suppressing the DE interaction and the ferromagnetism. For small A-site disorder, the long-range ferromagnetism is broken and replaced with the short-range antiferromagnetic regions embedded in the ferromagnetic matrix. The high A-site disorder will eventually lead to melting of the long-range ferromagnetic order into the short-range magnetically ordered clusters. And the enhanced magnetoresistant effects were found in the samples with intermediate disorder. (C) 2010 Elsevier B.V. All rights reserved.
KeywordA-site disorder Manganites Colossal magnetoresistive effect Phase separation
Funding OrganizationNational Natural Science Foundation of China ; National Key Programs for Basic Researches of China
DOI10.1016/j.tsf.2010.03.131
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[50832002] ; National Natural Science Foundation of China[50601013] ; National Key Programs for Basic Researches of China[2006CB921802]
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000295942000009
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/100350
Collection中国科学院金属研究所
Corresponding AuthorWang, K. F.
Affiliation1.Nanjing Univ, Solid State Microstruct Lab, Nanjing 210093, Peoples R China
2.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
4.Boston Coll, Dept Phys, Chestnut Hill, MA 02467 USA
Recommended Citation
GB/T 7714
Wang, K. F.,Luo, W. Z.,Dong, S.,et al. The A-site disorder effects and enhanced magnetoresistance in La0.55Sr0.45MnO3[J]. THIN SOLID FILMS,2010,518(24):E38-E41.
APA Wang, K. F..,Luo, W. Z..,Dong, S..,Li, D..,Zhang, Z. D..,...&Liu, J. -M..(2010).The A-site disorder effects and enhanced magnetoresistance in La0.55Sr0.45MnO3.THIN SOLID FILMS,518(24),E38-E41.
MLA Wang, K. F.,et al."The A-site disorder effects and enhanced magnetoresistance in La0.55Sr0.45MnO3".THIN SOLID FILMS 518.24(2010):E38-E41.
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