A self-consistent approach to the J(1)-J(2)-J(3) model
文献类型：期刊论文
| 作者 | Yang, J ; Yu, DK ; Shen, JL |
| 刊名 | PHYSICS LETTERS A
 |
| 出版日期 | 1997 |
| 卷号 | 236期号:5-6页码:589 |
| 关键词 | QUANTUM HEISENBERG ANTIFERROMAGNETS SPIN-WAVE THEORY LONG-RANGE ORDER SQUARE-LATTICE ZERO-TEMPERATURE PHASE-DIAGRAM 2 DIMENSIONS APPROXIMATION FRUSTRATION STIFFNESS |
| ISSN号 | 0375-9601 |
| 通讯作者 | Yang, J: Chinese Acad Sci, Inst Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | The magnetic and transport properties of (La,Gd)(1-x)SrxMnO3-delta (x = 0.15, 0.2, 0.25, and 0.3) with a fixed tolerance factor t = 0.913 are studied. Special attention is paid to the postannealing effects of the compounds. Two magnetic transitions are observed in samples x = 0.2 and 0.25 which are single phase in structure according to powder x-ray diffraction. Different effects on the two resulting states are produced by the postannealing. Accompanying the weakening of the state at lower temperature, the magnetic ordering of high-temperature state is enhanced substantially by the introduction of excess oxygen due to annealing the samples in O-2. One typical paramagnetic-ferromagnetic transition occurs in samples x = 0.15 and 0.3. There is a strong indication that the magnetic states in x = 0.15 and 0.3 are, respectively, the developments of the high- and low-temperature states in x = 0.2 (or x = 0.25). The occurrence of two metal-semiconductor transitions in x = 0.15-0.25 and their responses to postannealing suggest magnetic heterogeneity in the compound. By assuming the coexistence of vacancy-rich and vacancy-deficient domains in the compounds, these observations can be understood qualitatively. (C) 1997 American Institute of Physics. [S0003-6951(97)02651-X]. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/33206]  |
| 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, J,Yu, DK,Shen, JL. A self-consistent approach to the J(1)-J(2)-J(3) model[J]. PHYSICS LETTERS A,1997,236(5-6):589. |
| APA | Yang, J,Yu, DK,&Shen, JL.(1997).A self-consistent approach to the J(1)-J(2)-J(3) model.PHYSICS LETTERS A,236(5-6),589. |
| MLA | Yang, J,et al."A self-consistent approach to the J(1)-J(2)-J(3) model".PHYSICS LETTERS A 236.5-6(1997):589. |
入库方式： OAI收割
来源：物理研究所
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