Improved flux pinning and anomalous magnetization peak in heavily overdoped Bi2-xPbxSr2CaCu2-yCryO8+delta single crystals

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	Improved flux pinning and anomalous magnetization peak in heavily overdoped Bi2-xPbxSr2CaCu2-yCryO8+delta single crystals
	Sun, YP ; Song, WH ; Zhao, B ; Du, JJ ; Wen, HH ; Zhao, ZX ; Ku, HC
刊名	APPLIED PHYSICS LETTERS
	2000
卷号	76 期号:25 页码:3795
关键词	JOSEPHSON-COUPLED SYSTEMS T-C SUPERCONDUCTORS SURFACE BARRIERS PHASE-DIAGRAM ANISOTROPY YBA2CU3O7-DELTA BI2SR2CACU2OY MECHANISMS CROSSOVER FIELDS
ISSN号	0003-6951
通讯作者	Sun, YP: Chinese Acad Sci, Inst Solid State Phys, Internal Frict & Defects Solids Lab, Hefei 230031, Peoples R China.
中文摘要	Flux pinning and anomalous magnetization peak of heavily overdoped Bi2-xPbxSr2CaCu2-yCryO8+delta [Cr-doping (Bi, Pb)-2212] single crystals are investigated by means of magnetization measurements with the magnetic field parallel to the c axis. Compared with undoped Bi2Sr2CaCu2O8+delta (Bi-2212) and Pb-doping Bi2-xPbxSr2CaCu2O8+delta [(Bi, Pb)-2212] single crystals, the irreversibility line of Cr-doping (Bi, Pb)-2212 single crystals is pronouncedly shifted to high temperatures. The anomalous magnetization peak H-2p with maximum peak field near 8000 G is observed. The H-2p exhibits strong temperature dependence from 0.19 to 0.93T(c). The temperature dependence of H-2p can be explained according to vortex decoupling theory. The improved flux pinning may originate from reduced anisotropy due to Pb doping and a sufficient number of effective pinning centers due to the random Cr substitution on the Cu site. (C) 2000 American Institute of Physics. [S0003-6951(00)04625-8].
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/311004/39652]
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	Sun, YP,Song, WH,Zhao, B,et al. Improved flux pinning and anomalous magnetization peak in heavily overdoped Bi2-xPbxSr2CaCu2-yCryO8+delta single crystals[J]. APPLIED PHYSICS LETTERS,2000,76(25):3795.
APA	Sun, YP.,Song, WH.,Zhao, B.,Du, JJ.,Wen, HH.,...&Ku, HC.(2000).Improved flux pinning and anomalous magnetization peak in heavily overdoped Bi2-xPbxSr2CaCu2-yCryO8+delta single crystals.APPLIED PHYSICS LETTERS,76(25),3795.
MLA	Sun, YP,et al."Improved flux pinning and anomalous magnetization peak in heavily overdoped Bi2-xPbxSr2CaCu2-yCryO8+delta single crystals".APPLIED PHYSICS LETTERS 76.25(2000):3795.