Heat diffusivity of Nd1-xSrxMnO3-delta and La1-xCaxMnO3-delta compounds
文献类型：期刊论文
| 作者 | Liebe, J ; Kang, H ; Haupt, L ; Mandal, P ; Medvedeva, IV ; Rao, GH ; Barner, K ; Poddar, A ; Muruguraj, P ; Fischer, R ; Gmelin, E ; Gommert, E ; von Helmolt, R ; Wecker, J |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 1998 |
| 卷号 | 83期号:11页码:7148 |
| 关键词 | GIANT MAGNETORESISTANCE TEMPERATURE FERROMAGNETS DEPENDENCE TRANSPORT |
| ISSN号 | 0021-8979 |
| 通讯作者 | Liebe, J: Univ Gottingen, Inst Phys 4, Bunsenstr 11-15, D-37073 Gottingen, Germany. |
| 中文摘要 | The thermal diffusivity of bulk and epitaxial layer samples of the giant magnetoresistance compounds Nd0.67Sr0.33MnO3-delta and La0.67Ca0.33MnO3-delta is investigated in a comparative study for temperatures between 35 and 350 K in order to detect preparational differences and to correlate the thermal transport with magnetization hi and resistivity rho, We find for Nd-Sr an anomaly of the heat diffusivity D near 145 K (80 K La-Ca) which we attribute to a temperature-induced canted metal to AFM insulator transition and a second anomaly in D(T) near 250 K (300 K) which we assign to the transition to paramagnetism. The low-temperature anomaly can be a step of up to five times in the heat conductivity, which makes these compounds potential magnetic field activated heat switches, as this transition can also be induced by a magnetic field. (C) 1998 American Institute of Physics. [S0021-8979(98)44811-4]. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/39118]  |
| 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 | Liebe, J,Kang, H,Haupt, L,et al. Heat diffusivity of Nd1-xSrxMnO3-delta and La1-xCaxMnO3-delta compounds[J]. JOURNAL OF APPLIED PHYSICS,1998,83(11):7148. |
| APA | Liebe, J.,Kang, H.,Haupt, L.,Mandal, P.,Medvedeva, IV.,...&Wecker, J.(1998).Heat diffusivity of Nd1-xSrxMnO3-delta and La1-xCaxMnO3-delta compounds.JOURNAL OF APPLIED PHYSICS,83(11),7148. |
| MLA | Liebe, J,et al."Heat diffusivity of Nd1-xSrxMnO3-delta and La1-xCaxMnO3-delta compounds".JOURNAL OF APPLIED PHYSICS 83.11(1998):7148. |
入库方式： OAI收割
来源：物理研究所
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