2-DIMENSIONAL VORTEX DYNAMICS IN YBA2CU3O7/PRBA2CU3O7 MULTILAYERS
文献类型:期刊论文
作者 | QIU, XG ; ZHAO, BR ; GUO, SQ ; ZHANG, JL ; LI, L ; TACHIKI, M |
刊名 | PHYSICAL REVIEW B
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出版日期 | 1993 |
卷号 | 48期号:21页码:16180 |
关键词 | HIGH-TC SUPERCONDUCTORS FLUX-LINE LATTICE GLASS SUPERCONDUCTIVITY II SUPERCONDUCTORS PHASE CREEP TRANSITIONS YBA2CU3O7 FILMS |
ISSN号 | 0163-1829 |
通讯作者 | QIU, XG: CHINESE ACAD SCI,INST PHYS,NATL LAB SUPERCOND,BEIJING 100080,PEOPLES R CHINA. |
中文摘要 | The isochronal spectra of magnetic aftereffect in the amorphous alloys Fe90-xCoxZr10 were measured within a temperature range of 77-450 K and over a time interval of 1 to 180 s. The spectra are characterized by a temperature-independent relaxation process at lower temperatures (less than 190 K) and a well-defined relaxation peak around 350 K which, for the samples with x < 50, is accompanied by a small but distinct peak near the Curie temperature of the Fe90Zr10 phase (T(C) = 230 K). The relaxations in the Fe-rich samples with x < 30 can be reexcited by demagnetization even after several cyclical temperature measurements are performed within the 77-450 K temperature range, whereas the relaxations in the samples with x > 30 are completely irreversible. The current results can be described by a two-level system constructed of mobile atom pairs, and a quantitative analysis performed on the typical Fe-rich sample leads to an activation enthalpy spectrum ranging from 0.6 to 1.6 eV and a small preexponential factor tau0 = 2.224 X 10(-16). In addition to the atom-pair mechanism, the rearrangement of the spin direction is also assumed to explain the concomitant relaxation peaks in the Fe-rich samples. |
收录类别 | SCI |
语种 | 英语 |
公开日期 | 2013-09-17 |
源URL | [http://ir.iphy.ac.cn/handle/311004/32743] ![]() |
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 | QIU, XG,ZHAO, BR,GUO, SQ,et al. 2-DIMENSIONAL VORTEX DYNAMICS IN YBA2CU3O7/PRBA2CU3O7 MULTILAYERS[J]. PHYSICAL REVIEW B,1993,48(21):16180. |
APA | QIU, XG,ZHAO, BR,GUO, SQ,ZHANG, JL,LI, L,&TACHIKI, M.(1993).2-DIMENSIONAL VORTEX DYNAMICS IN YBA2CU3O7/PRBA2CU3O7 MULTILAYERS.PHYSICAL REVIEW B,48(21),16180. |
MLA | QIU, XG,et al."2-DIMENSIONAL VORTEX DYNAMICS IN YBA2CU3O7/PRBA2CU3O7 MULTILAYERS".PHYSICAL REVIEW B 48.21(1993):16180. |
入库方式: OAI收割
来源:物理研究所
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