Temperature dependence of macroscopic quantum tunneling in antiferromagnetic particles
文献类型：期刊论文
| 作者 | Liang, JQ ; Muller-Kirsten, HJW ; Nie, YH ; Pu, FC ; Zhang, YB |
| 刊名 | PHYSICS LETTERS A
 |
| 出版日期 | 1998 |
| 卷号 | 248期号:5-6页码:434 |
| 关键词 | RESONANCE EXPERIMENTS MAGNETIC PARTICLES POWER ABSORPTION COHERENCE PROTEINS SYSTEM |
| ISSN号 | 0375-9601 |
| 通讯作者 | Liang, JQ (reprint author), Univ Kaiserslautern, Dept Phys, POB 3049, D-67653 Kaiserslautern, Germany. |
| 中文摘要 | Structural, magnetic, and transport properties of polycrystalline La0.7Ca0.3Mn1-xFexO3 and La0.7Ca0.3Mn1-xGexO3 are experimentally studied. Single-phase samples are obtained in the range x = 0 - 0.12 for Fe, and x = 0 - 0.06 for Ge. There are no appreciable structure changes due to the introduction of Fe and Ge. The Mn-site doping favors a reduced magnetic/resistive transition, at rates of similar to 22 K for 1% Fe and similar to 28 K for 1% Ge, and an elevated resistivity. No metal-insulator transition occurs when the content of Fe exceeds similar to 0.1. The enhanced doping effects in La0.7Ca0.3Mn1-xFexO3 can be ascribed to the reduced hole concentration noting that the presence of Fe and Ge influence the contents of mobile e(g) electrons and holes in the compounds, respectively. Equivalence of the effects from Fe and Ge doping, respectively, to those due to e(g) electron and hole trapping and the relation between Mn- and O-site doping are discussed. (C) 1998 American Institute of Physics. [S0003-6951(98)01446-6]. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/44760]  |
| 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 | Liang, JQ,Muller-Kirsten, HJW,Nie, YH,et al. Temperature dependence of macroscopic quantum tunneling in antiferromagnetic particles[J]. PHYSICS LETTERS A,1998,248(5-6):434. |
| APA | Liang, JQ,Muller-Kirsten, HJW,Nie, YH,Pu, FC,&Zhang, YB.(1998).Temperature dependence of macroscopic quantum tunneling in antiferromagnetic particles.PHYSICS LETTERS A,248(5-6),434. |
| MLA | Liang, JQ,et al."Temperature dependence of macroscopic quantum tunneling in antiferromagnetic particles".PHYSICS LETTERS A 248.5-6(1998):434. |
入库方式： OAI收割
来源：物理研究所
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