Dynamic properties of cluster glass in La0.25Ca0.75MnO3 nanoparticles

doi:10.1063/1.3246869

IMR OpenIR

	Dynamic properties of cluster glass in La0.25Ca0.75MnO3 nanoparticles
	Huang, X. H.1; Ding, J. F.; Jiang, Z. L.; Yin, Y. W.; Yu, Q. X.; Li, X. G.
通讯作者	Huang, X. H.()
	2009-10-15
发表期刊	JOURNAL OF APPLIED PHYSICS
ISSN	0021-8979
卷号	106 期号:8 页码:6
摘要	The dynamic magnetic properties of cluster glass in La0.25Ca0.75MnO3 nanoparticles with average particle size range from 40 to 1000 nm have been investigated by measuring the frequency and dc magnetic field (H) dependencies of the ac susceptibility. The frequency-dependent T-f, the freezing temperature of the ferromagnetic clusters determined by the peak in the real part of the ac susceptibility chi' versus T curve with H=0, is fit to a power law. The relaxation time constant tau(0) decreases as the particle size increases from 40 to 350 nm, which indicates the decrease in the size of the clusters at the surface of the nanoparticle. The relationship between H and T-f(H) deviates from the De Almeida-Thouless-type phase boundary at relatively high fields for the samples with size range from 40 to 350 nm. Moreover, for the samples with particle sizes of 40 and 100 nm, tau(0) increases with increasing H, which indicates the increasing cluster size and may be ascribed to the competition between the influence of H and the local anisotropy field in the shell spins. All these results may give rise to a new insight into the behaviors of the cluster glass state in the nanosized antiferromagnetic charge-ordered perovskite manganites. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3246869]
资助者	National Natural Science Foundation of China ; National Basic Research Program of China ; CAS
DOI	10.1063/1.3246869
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50721061] ; National Natural Science Foundation of China[50832007] ; National Basic Research Program of China[2006CB922005] ; National Basic Research Program of China[2009CB929502] ; CAS
WOS研究方向	Physics
WOS类目	Physics, Applied
WOS记录号	WOS:000271358100061
出版者	AMER INST PHYSICS
引用统计	被引频次：64[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/96239
专题	中国科学院金属研究所
通讯作者	Huang, X. H.
作者单位	1.Univ Sci & Technol China, Dept Phys, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Peoples R China 2.Acad Sinica, Int Ctr Mat Phys, Shenyang 110015, Peoples R China
推荐引用方式 GB/T 7714	Huang, X. H.,Ding, J. F.,Jiang, Z. L.,et al. Dynamic properties of cluster glass in La0.25Ca0.75MnO3 nanoparticles[J]. JOURNAL OF APPLIED PHYSICS,2009,106(8):6.
APA	Huang, X. H.,Ding, J. F.,Jiang, Z. L.,Yin, Y. W.,Yu, Q. X.,&Li, X. G..(2009).Dynamic properties of cluster glass in La0.25Ca0.75MnO3 nanoparticles.JOURNAL OF APPLIED PHYSICS,106(8),6.
MLA	Huang, X. H.,et al."Dynamic properties of cluster glass in La0.25Ca0.75MnO3 nanoparticles".JOURNAL OF APPLIED PHYSICS 106.8(2009):6.