کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819369 | 1525761 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Anomalous flux jump and supercooling phenomenon around the order-disorder transition in MgB2 single crystals
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Anomalous flux jump and supercooling phenomenon around the order-disorder transition in MgB2 single crystals Anomalous flux jump and supercooling phenomenon around the order-disorder transition in MgB2 single crystals](/preview/png/1819369.png)
چکیده انگلیسی
We have performed the detailed measurements of temperature dependence of magnetization M(T) on MgB2 single crystals in a wide range of field H using torque magnetometry. In a field region, where the peak effect in M(H) is observed, we find that M(T) of the warming branch increases monotonously with T and exhibits a small step-like increase at T1â, which is related to the order-disorder transition, while M(T) of the cooling branch, showing the larger values than that in warming branch below T1â, drops suddenly toward the warming branch at T2â. We ascribe this anomalous behavior of M(T) of the cooling branch to a supercooling phenomenon of disordered phase, which transforms to the ordered state at T2â.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 469, Issues 15â20, 15 October 2009, Pages 1132-1135
Journal: Physica C: Superconductivity - Volume 469, Issues 15â20, 15 October 2009, Pages 1132-1135
نویسندگان
M. Chotoku, T. Nojima, A. Ochiai, H. Aoki, H.-G. Lee, S.-I. Lee,