Deviations from plastic barriers in Bi2Sr2CaCu2O8+delta thin films
文献类型：期刊论文
| 作者 | Zhang, YZ ; Wang, Z ; Lu, XF ; Wen, HH ; de Marneffe, JF ; Deltour, R ; Jansen, AGM ; Wyder, P |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2005 |
| 卷号 | 71期号:5 |
| 关键词 | HIGH-TEMPERATURE SUPERCONDUCTORS HIGH-TC SUPERCONDUCTORS RESISTIVE TRANSITION MAGNETIC-FIELD CREEP IRREVERSIBILITY FLUCTUATIONS VORTICES CRYSTAL LINE |
| ISSN号 | 1098-0121 |
| 通讯作者 | Zhang, YZ: Chinese Acad Sci, Inst Phys, Natl Lab Superconduct, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | The crystal and the magnetic structures as well as magnetostriction of the Laves-phase compound NdCo2 are investigated by means of temperature-dependent high-resolution neutron-powder diffraction. The compound crystallizes in the cubic Laves phase C15 structure at high temperature, undergoes a tetragonal distortion (space group I4l/amd) around T(C)approximate to 100 K and an orthorhombic distortion (space group Fddd) at T 42 K. The temperature dependence of lattice constants, magnetostriction constant, and magnetic moment indicate that the magnetic and structural transitions are second order in the vicinity of T-C and are first-order around 42 K. Refinements of magnetic structure reveal that the Nd moment distinctly exhibits an abrupt increase at the first-order transition and the easy magnetization direction of the compound changes from [001] in the tetragonal lattice to [011] in the orthorhombic lattice, indicating a strong coupling between crystal structure and magnetic properties at zero field. Analysis of the temperature dependence of bondlength suggests a strong magnetic exchange striction in the tetragonal structure and that the abrupt increase of the Nd moment is attributed essentially to a change in crystal electric field. Field-dependent neutron diffraction reveals a decoupling of the magnetic and structural transitions under relatively modest magnetic fields. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35899]  |
| 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 | Zhang, YZ,Wang, Z,Lu, XF,et al. Deviations from plastic barriers in Bi2Sr2CaCu2O8+delta thin films[J]. PHYSICAL REVIEW B,2005,71(5). |
| APA | Zhang, YZ.,Wang, Z.,Lu, XF.,Wen, HH.,de Marneffe, JF.,...&Wyder, P.(2005).Deviations from plastic barriers in Bi2Sr2CaCu2O8+delta thin films.PHYSICAL REVIEW B,71(5). |
| MLA | Zhang, YZ,et al."Deviations from plastic barriers in Bi2Sr2CaCu2O8+delta thin films".PHYSICAL REVIEW B 71.5(2005). |
入库方式： OAI收割
来源：物理研究所
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