Angular dependence of the order-disorder transition in proton irradiated single crystal MgB2 -: art. no. 224509

被引：7
作者：
Moore, JD
Perkins, GK
Caplin, AD
Jun, J
Kazakov, SM
Karpinski, J
Cohen, LF
机构：
[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England
[2] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland
来源：
PHYSICAL REVIEW B | 2005年 / 71卷 / 22期
关键词：
D O I：
10.1103/PhysRevB.71.224509
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present magnetization results on a proton irradiated MgB2 single crystal that displays a peak in magnetization for the field applied parallel to the c axis. Magnetic history effects are observed, which are ascribed to the occurrence of a disorder driven phase transition close to an inflection point in the magnetization-field curve. We demonstrate that the angular and temperature dependence of this feature is significantly different to that of the lower and upper critical fields.
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页数：5
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