Dynamic properties of cluster glass in La(0.25)Ca(0.75)MnO(3) nanoparticles
文献类型：期刊论文
| 作者 | X. H. Huang ; J. F. Ding ; Z. L. Jiang ; Y. W. Yin ; Q. X. Yu ; X. G. Li |
| 刊名 | Journal of Applied Physics
 |
| 出版日期 | 2009 |
| 卷号 | 106期号:8 |
| 关键词 | spin-glass behavior magnetization phase susceptibility la0.5sr0.5coo3 fulcher systems state law |
| ISSN号 | 0021-8979 |
| 中文摘要 | The dynamic magnetic properties of cluster glass in La(0.25)Ca(0.75)MnO(3) 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] |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31984]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | X. H. Huang,J. F. Ding,Z. L. Jiang,et al. Dynamic properties of cluster glass in La(0.25)Ca(0.75)MnO(3) nanoparticles[J]. Journal of Applied Physics,2009,106(8). |
| APA | X. H. Huang,J. F. Ding,Z. L. Jiang,Y. W. Yin,Q. X. Yu,&X. G. Li.(2009).Dynamic properties of cluster glass in La(0.25)Ca(0.75)MnO(3) nanoparticles.Journal of Applied Physics,106(8). |
| MLA | X. H. Huang,et al."Dynamic properties of cluster glass in La(0.25)Ca(0.75)MnO(3) nanoparticles".Journal of Applied Physics 106.8(2009). |
入库方式： OAI收割
来源：金属研究所
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