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Size effects on charge ordering and magnetic properties in La0.25Ca0.75MnO3
Li, X. G.1,2; Zhang, T.1,2
Corresponding AuthorLi, X. G.(lixg@ustc.edu.cn)
2009
Source PublicationCERAMICS INTERNATIONAL
ISSN0272-8842
Volume35Issue:1Pages:151-155
AbstractThe size effects on the charge ordering (CO) and magnetic properties in La0.25Ca0.75MnO3 with mean particle size ranging from 40 to 2000 nm were studied. With decreasing particle size the CO transition temperature shifts to lower temperature and the transition width becomes increasingly wide, indicating the weakening of the CO state. Meanwhile the ferromagnetic (FM) cluster glass state appears and the magnetization at low temperature increases significantly. The behaviour is due to the increasing uncompensated surface spins which weaken the antiferromagnetic interaction and disfavour the formation of the CO state. The suppression of the CO state and appearance of the FM cluster glass state are also found in La0.25Ca0.75MnO3 nanowires fabricated by a sol-gel template method. These results indicate that the CO state can be modulated effectively by varying particle size, which has an important implication for nano-device applications of manganites. (c) 2007 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
KeywordC. Magnetic properties Charge ordering Manganites
Funding OrganizationNational Natural Science Foundation of China ; National Basic Research Program of China
DOI10.1016/j.ceramint.2007.10.026
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[50421201] ; National Natural Science Foundation of China[10334090] ; National Basic Research Program of China[2006CB922005]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000261818300028
PublisherELSEVIER SCI LTD
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/99595
Collection中国科学院金属研究所
Corresponding AuthorLi, X. G.
Affiliation1.Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Phys, Hefei 230026, Peoples R China
2.Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China
Recommended Citation
GB/T 7714
Li, X. G.,Zhang, T.. Size effects on charge ordering and magnetic properties in La0.25Ca0.75MnO3[J]. CERAMICS INTERNATIONAL,2009,35(1):151-155.
APA Li, X. G.,&Zhang, T..(2009).Size effects on charge ordering and magnetic properties in La0.25Ca0.75MnO3.CERAMICS INTERNATIONAL,35(1),151-155.
MLA Li, X. G.,et al."Size effects on charge ordering and magnetic properties in La0.25Ca0.75MnO3".CERAMICS INTERNATIONAL 35.1(2009):151-155.
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