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首页> 外文期刊>Physica, C. Superconductivity and its applications >Anomalous magnetization in a heavily Pb-doped Bi2Sr2CaCu2O8+delta as-grown single crystal
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Anomalous magnetization in a heavily Pb-doped Bi2Sr2CaCu2O8+delta as-grown single crystal

机译：重掺杂Pb的Bi2Sr2CaCu2O8 +δ生长单晶中的异常磁化

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摘要

Anomalous magnetization is investigated on a heavily Pb-doped Bi2Sr2CaCu2O8+delta as-grown single crystal [(Bi,Pb)2212] with T-c = 92 K. Both the anomalous magnetization peak H-2p and the onset of the anomalous magnetization peak H-on are detected in temperature region from 0.3T(c) to 0.9T(c), based on the descending field branch of magnetic hysteresis loops. At low temperatures below 20 K, the magnetic hysteresis loop behaves as an obvious asymmetry. The double magnetic hysteresis behavior is observed at high temperatures close to T-c. The temperature dependence of H-2p can be described according to the thermal disorder induced decoupling theory. The double magnetization behavior may be ascribed to the existence of intra-grain granularity due to the inhomogeneity of oxygen distribution induced by heavily Pb-doping. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 34]
机译：研究了重掺杂Pb的Bi2Sr2CaCu2O8 +δ生长的单晶[（Bi，Pb）2212]的异常磁化强度，Tc = 92K。异常磁化强度峰H-2p和异常磁化强度峰H-根据磁滞回线的下降场分支，在0.3T（c）至0.9T（c）的温度区域中检测到on。在低于20 K的低温下，磁滞回线表现为明显的不对称性。在接近T-c的高温下观察到双磁滞现象。 H-2p的温度依赖性可以根据热失调引起的解耦理论来描述。双重磁化行为可归因于由于重度Pb掺杂引起的氧分布不均匀而导致晶粒内粒度的存在。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：34]

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