Temperature dependence of the critical current determined from magnetic relaxation in HgBa2Ca2Cu3O8+delta

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	Temperature dependence of the critical current determined from magnetic relaxation in HgBa2Ca2Cu3O8+delta
	Yu, Y ; Zeng, ZY ; Xu, XN ; Shao, HM ; Qin, MJ ; Jin, X ; Yao, XX ; Rong, XS ; Ying, B ; Zhao, ZX
刊名	PHYSICA C
	1998
卷号	298 期号:3-4 页码:240
关键词	BA-CU-O HIGH-TC SUPERCONDUCTORS COLLECTIVE FLUX-CREEP CURRENT-DENSITY SINGLE-CRYSTAL YBA2CU3O7 SUPERCONDUCTORS ACTIVATION-ENERGIES FILMS
ISSN号	0921-4534
通讯作者	Yu, Y (reprint author), Nanjing Univ, Dept Phys, POB 2020, Nanjing 210093, Peoples R China.
中文摘要	Based on the U(j) relation of the collective pinning theory, U(j) = [U-c/mu][(j(c)/j)(mu) - 1], we introduce a direct method to derive the temperature dependence of the characteristic exponent mu, the collective pinning energy U-c and the critical current density j(c) from magnetic relaxation measurement. By utilizing a linear relation between 1/R = 1//partial derivative ln j/partial derivative ln t/ and ln t at a fixed temperature, mu and U-c are easily obtained. Inserting these parameters into U(j) we can extract j(c). So mu(T), U-c(T) and j(c)(T) are able to be derived from relaxation measurements at different temperatures. This method was applied to a HgBa2Ca2Cu3O8+delta superconductor. The results were discussed within the collective pinning and creep theory. (C) 1998 Elsevier Science B.V.
收录类别	SCI
语种	英语
公开日期	2013-09-23
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/44771]
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	Yu, Y,Zeng, ZY,Xu, XN,et al. Temperature dependence of the critical current determined from magnetic relaxation in HgBa2Ca2Cu3O8+delta[J]. PHYSICA C,1998,298(3-4):240.
APA	Yu, Y.,Zeng, ZY.,Xu, XN.,Shao, HM.,Qin, MJ.,...&Zhao, ZX.(1998).Temperature dependence of the critical current determined from magnetic relaxation in HgBa2Ca2Cu3O8+delta.PHYSICA C,298(3-4),240.
MLA	Yu, Y,et al."Temperature dependence of the critical current determined from magnetic relaxation in HgBa2Ca2Cu3O8+delta".PHYSICA C 298.3-4(1998):240.