The quasiorder-disorder phase transition and peak effect in MgB2 type-II superconducting materials and thin films

Ming Ju Chou, Herng-Er Horng

    研究成果: 雜誌貢獻期刊論文同行評審

    1 引文 斯高帕斯(Scopus)

    摘要

    The peak effect and the quasiorder-disorder first-order phase transition for Magnesium diboride, MgB2, superconducting bulk materials have been studied. The peak values of the critical current density Jc, and the exact peak positions together with its corresponding half-widths for a constant temperature as well as for a constant applied magnetic field have been calculated by considering the quantum, thermal as well as random fluctuations of the vortex lattice. The results for MgB2 bulk materials are in agreement with the experiment. The peak effect for MgB2 superconducting thin films is also predicted theoretically. The expected peak effect may be observed provided that doping or other experimental techniques are applied to improve the flux pinning of the MgB2 superconducting thin films.

    原文英語
    頁(從 - 到)128-135
    頁數8
    期刊Annalen der Physik (Leipzig)
    19
    發行號1-2
    DOIs
    出版狀態已發佈 - 2010 二月 1

    ASJC Scopus subject areas

    • 物理與天文學 (全部)

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