Observation of a Griffiths-like phase in bilayered manganites
文献类型：期刊论文
| 作者 | Yang, RF ; Sun, Y ; He, W ; Li, QA ; Cheng, ZH |
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2007 |
| 卷号 | 90期号:3 |
| 关键词 | MAGNETORESISTANCE LA1.2SR1.8MN2O7 SEPARATION PHYSICS ESR |
| ISSN号 | 0003-6951 |
| 通讯作者 | Sun, Y (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100080, Peoples R China. |
| 中文摘要 | The authors report the observation of a Griffiths-like phase in La2-2xSr1+2xMn2O7 (x=0.30, 0.33, and 0.40) and (La0.8Eu0.2)(2-2x)Sr1+2xMn2O7 (x=0.33) single crystals by means of electron spin resonance, magnetic susceptibility, and magnetoresistance measurements. In the temperature region T-C < T < 350 K, the resonance signal consists of a ferromagnetic resonance line and a paramagnetic resonance line, which suggests that the system is not in a pure paramagnetic phase. The ferromagnetic resonance signal disappears and the magnetic susceptibility starts to deviate from the Curie-Weiss law at the same temperature T-*approximate to 350 K, independent of doping level and anisotropy. These results indicate that a Griffiths-like phase exists at T-C < T < T-* in bilayered manganites, which is due to intrinsic inhomogeneity caused by quenched disorder. (c) 2007 American Institute of Physics. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50124]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Yang, RF,Sun, Y,He, W,et al. Observation of a Griffiths-like phase in bilayered manganites[J]. APPLIED PHYSICS LETTERS,2007,90(3). |
| APA | Yang, RF,Sun, Y,He, W,Li, QA,&Cheng, ZH.(2007).Observation of a Griffiths-like phase in bilayered manganites.APPLIED PHYSICS LETTERS,90(3). |
| MLA | Yang, RF,et al."Observation of a Griffiths-like phase in bilayered manganites".APPLIED PHYSICS LETTERS 90.3(2007). |
入库方式： OAI收割
来源：物理研究所
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