Magnetization Studies of K0.8Fe1.7Se2 Single Crystals

被引：0
作者：
I. Felner
S. Jin
G. Wang
S. Wang
K. Zhu
T. Zhou
机构：
[1] The Hebrew University,Racah Institute of Physics
[2] Chinese Academy of Sciences,Research & Development Center for Functional Crystals, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics
来源：
Journal of Superconductivity and Novel Magnetism | 2011年 / 24卷
关键词：
Superconductivity; Fe-Se based materials; Paramagnetic Meissner effect;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Magnetization measurements of the magneto-superconducting K0.8Fe1.7Se2 single crystals (TC=29.6 K) at various applied fields and temperatures have been performed. In the superconducting range, two unusual phenomena are observed. (i) The presence of paramagnetic Meissner effect up to 20 Oe, which is revealed by the positive field-cooled magnetization curves. (ii) A double peak in the hysteresis loop at low temperatures. The isothermal magnetization measured at 35 K clearly indicates the presence of a tiny amount of a ferromagnetic substance (probably pure Fe). The two peculiar phenomena observed are attributed to this impurity.
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页码：2033 / 2036
页数：3
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