| Specific heat anomalies and possible Griffiths-like phase in La(0.4)Ca(0.6)MnO(3) nanoparticles | |
| C. L. Lu; K. F. Wang; S. Dong; J. G. Wan; J. M. Liu; Z. F. Ren | |
| 2008 | |
| Source Publication | Journal of Applied Physics
 |
| ISSN | 0021-8979 |
| Volume | 103Issue:7 |
| Abstract | 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. |
| description.department | [lu, c. l.; wang, k. f.; dong, s.; wan, j. g.; liu, j. -m.] nanjing univ, nanjing natl lab microstruct, nanjing 210093, peoples r china. [lu, c. l.; wang, k. f.; dong, s.; wan, j. g.; liu, j. -m.] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china. [ren, z. f.] boston coll, dept phys, chestnut hill, ma 02467 usa.;liu, jm (reprint author), nanjing univ, nanjing natl lab microstruct, nanjing 210093, peoples r china;liujm@nju.edu.cn |
| Keyword | Low-temperature La0.5ca0.5mno3 |
| URL | 查看原文 |
| WOS ID | WOS:000255043200792 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/32989 |
| Collection | 中国科学院金属研究所 |
| Recommended Citation 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). |
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