Specific heat anomalies and possible Griffiths-like phase in La(0.4)Ca(0.6)MnO(3) nanoparticles
文献类型：期刊论文
| 作者 | C. L. Lu ; K. F. Wang ; S. Dong ; J. G. Wan ; J. M. Liu ; Z. F. Ren |
| 刊名 | Journal of Applied Physics
 |
| 出版日期 | 2008 |
| 卷号 | 103期号:7 |
| 关键词 | low-temperature la0.5ca0.5mno3 |
| ISSN号 | 0021-8979 |
| 中文摘要 | The specific heat of La(0.4)Ca(0.6)MnO(3) in bulk and nanoparticle (similar to 60 nm in grain size) forms was investigated. It is found that the charge-ordered state highly stabilized in the bulk samples can be significantly suppressed in the nanoparticle. The low temperature specific heat data reveal a Schottky-like anomaly at similar to 5 K for the bulk sample, while a large electronic linear term (gamma=17.8 mJ/mole K(2)) was identified for the nanoparticle samples. The magnetic measurements unveil the small magnetic entropy as low as similar to 0.255 J/kg K and the possible existence of a Griffiths-like phase in the nanoparticle samples. We argue that the physics underlying the size effect is associated with the dimension-dependent interactions based on which the ferromagnetic/charge-ordering transition occurs. (c) 2008 American Institute of Physics. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32989]  |
| 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 | C. L. Lu,K. F. Wang,S. Dong,et al. Specific heat anomalies and possible Griffiths-like phase in La(0.4)Ca(0.6)MnO(3) nanoparticles[J]. Journal of Applied Physics,2008,103(7). |
| APA | C. L. Lu,K. F. Wang,S. Dong,J. G. Wan,J. M. Liu,&Z. F. Ren.(2008).Specific heat anomalies and possible Griffiths-like phase in La(0.4)Ca(0.6)MnO(3) nanoparticles.Journal of Applied Physics,103(7). |
| MLA | C. L. Lu,et al."Specific heat anomalies and possible Griffiths-like phase in La(0.4)Ca(0.6)MnO(3) nanoparticles".Journal of Applied Physics 103.7(2008). |
入库方式： OAI收割
来源：金属研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。