Crystal structure and Curie temperature of Sm2Fe17-y GayCx
文献类型：期刊论文
| 作者 | Mattern, N ; Handstein, A ; Cao, L ; Teresiak, A ; Gebel, B ; Wolf, M ; Gruner, W ; Muller, KH |
| 刊名 | PHYSICA STATUS SOLIDI A-APPLIED RESEARCH
 |
| 出版日期 | 1997 |
| 卷号 | 164期号:2页码:649 |
| 关键词 | MAGNETIC-PROPERTIES PERMANENT-MAGNETS |
| ISSN号 | 0031-8965 |
| 通讯作者 | Mattern, N: Inst Festkorper & Werkstofforsch Dresden EV, POB 270016, D-01171 Dresden, Germany. |
| 中文摘要 | Magnetic relaxation and flux pinning behaviors have been investigated on the c-axis oriented [YBa2Cu3O7 (24 Angstrom)/PrBa2Cu3O7 (24 Angstrom)](12) multilayers in the perpendicular magnetic fields (H parallel to c-axis) up to 2 T. The critical current density, J(c), value is of the order of 10(6) A/cm(2) in the investigated temperature range and at magnetic field H approximate to 0. The proximate logarithmic dependence of magnetization on time is observed in this multilayers. The magnetic relaxation rate Q = dM/dln t decreases monotonically with increasing temperature. The normalized magnetic relaxation rate S shows a maximum value in S-T curves at low magnetic fields. The behaviors of Q and S are found to be strongly dependent on the magnetic fields. A scaling form of vortex activation energy, U-eff(J, T) = U(i)G(T)F(J(i)/J) was used to analyze the flux pinning behavior at the given magnetic field. Here U-i and J(i) are scaling constants of activation energy and current density, respectively, and G(T) is empirically chosen as G(T) = (1-(T/T-r)(2))(3/2) With T-r being the irreversibility temperature. The current density dependence of U-eff is in agreement with the prediction of collective-pinning theory. The possible pinning mechanisms are proposed. (C) 1997 Elsevier Science B.V. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35343]  |
| 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 | Mattern, N,Handstein, A,Cao, L,et al. Crystal structure and Curie temperature of Sm2Fe17-y GayCx[J]. PHYSICA STATUS SOLIDI A-APPLIED RESEARCH,1997,164(2):649. |
| APA | Mattern, N.,Handstein, A.,Cao, L.,Teresiak, A.,Gebel, B.,...&Muller, KH.(1997).Crystal structure and Curie temperature of Sm2Fe17-y GayCx.PHYSICA STATUS SOLIDI A-APPLIED RESEARCH,164(2),649. |
| MLA | Mattern, N,et al."Crystal structure and Curie temperature of Sm2Fe17-y GayCx".PHYSICA STATUS SOLIDI A-APPLIED RESEARCH 164.2(1997):649. |
入库方式： OAI收割
来源：物理研究所
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