Magnetoresistances and magnetic entropy changes associated with negative lattice expansions in NaZn13-type compounds LaFeCoSi
文献类型：期刊论文
| 作者 | Hu, FX ; Qian, XL ; Wang, GJ ; Sun, JR ; Shen, BG ; Cheng, ZH ; Gao, J |
| 刊名 | CHINESE PHYSICS
 |
| 出版日期 | 2005 |
| 卷号 | 14期号:11页码:2329 |
| 关键词 | ROOM-TEMPERATURE METAMAGNETIC TRANSITION INTERMETALLIC COMPOUNDS GD-5(SI2GE2) SYSTEM FE |
| ISSN号 | 1009-1963 |
| 通讯作者 | Hu, FX: Capital Normal Univ, Dept Phys, Beijing 100037, Peoples R China. |
| 中文摘要 | Magnetoresistances and magnetic entropy changes in NaZn13-type compounds La(Fe1-xCox)(11.9)Si-1.1 (x=0.04, 0.06, and 0.08) with Curie temperatures of 243 K, 274 K, and 301 K, respectively, are studied. The ferromagnetic ordering is accompanied by a negative lattice expansion. Large magnetic entropy changes in a wide temperature range from similar to 230 K to similar to 320 K are achieved. Raising Co content increases the Curie temperature but weakens the magnetovolume effect, thereby causing a decrease in magnetic entropy change. These materials exhibit a metallic character below T-C, whereas the electrical resistance decreases abruptly and then recovers the metal-like behaviour above T-C. Application of a magnetic field retains the transitions via increasing the ferromagnetic ordering temperature. An isothermal increase in magnetic field leads to an increase in electrical resistance at temperatures near but above T-C, which is a consequence of the field-induced metamagnetic transition from a paramagnetic state to a ferromagnetic state. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/41687]  |
| 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 | Hu, FX,Qian, XL,Wang, GJ,et al. Magnetoresistances and magnetic entropy changes associated with negative lattice expansions in NaZn13-type compounds LaFeCoSi[J]. CHINESE PHYSICS,2005,14(11):2329. |
| APA | Hu, FX.,Qian, XL.,Wang, GJ.,Sun, JR.,Shen, BG.,...&Gao, J.(2005).Magnetoresistances and magnetic entropy changes associated with negative lattice expansions in NaZn13-type compounds LaFeCoSi.CHINESE PHYSICS,14(11),2329. |
| MLA | Hu, FX,et al."Magnetoresistances and magnetic entropy changes associated with negative lattice expansions in NaZn13-type compounds LaFeCoSi".CHINESE PHYSICS 14.11(2005):2329. |
入库方式： OAI收割
来源：物理研究所
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