A new method to obtain U(J) relationship in high temperature superconductor

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	A new method to obtain U(J) relationship in high temperature superconductor
	Qin, MJ ; Jin, X ; Yao, XX ; Fu, YX ; Rong, XS ; Ni, YM
刊名	INTERNATIONAL JOURNAL OF MODERN PHYSICS B
	1997
卷号	11 期号:6 页码:753
关键词	HIGH-TC SUPERCONDUCTORS ACTIVATED FLUX-MOTION YBA2CU3O7 SUPERCONDUCTORS SINGLE-CRYSTAL CREEP RELAXATION DEPENDENCE POWDER
ISSN号	0217-9792
通讯作者	Qin, MJ: NANJING UNIV,DEPT PHYS,NANJING 210093,PEOPLES R CHINA.
中文摘要	An implicit expression for the time dependence of the current density J(t) is derived without the constant assumption of dU/dJ or [dU/dJ], based on which a new method to extract U(J) relationship from magnetic relaxation data in high temperature superconductors is described. This method is applied to a melt textured growth YBa2Cu3O6+x sample and we obtain U(J) similar to J(-mu) with mu = 0.90 for H parallel to c, which is in accordance with that derived by the usual method suggested by Malery et al. (mu = 0.87). Moreover, both methods give the same value of the constant C, which implies that the determination of C by the requirement of continuity of the U(J) curve at different temperatures is reliable. And the results U(J) similar to J(-mu) by both methods are evidence for the collective pinning or the vortex glass theory.
收录类别	SCI
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/33071]
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	Qin, MJ,Jin, X,Yao, XX,et al. A new method to obtain U(J) relationship in high temperature superconductor[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B,1997,11(6):753.
APA	Qin, MJ,Jin, X,Yao, XX,Fu, YX,Rong, XS,&Ni, YM.(1997).A new method to obtain U(J) relationship in high temperature superconductor.INTERNATIONAL JOURNAL OF MODERN PHYSICS B,11(6),753.
MLA	Qin, MJ,et al."A new method to obtain U(J) relationship in high temperature superconductor".INTERNATIONAL JOURNAL OF MODERN PHYSICS B 11.6(1997):753.