کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1817851 1525718 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fe/Ba(Fe1−xCox)2As2 multilayers and quasi-multilayers with Tc = 29 K
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Fe/Ba(Fe1−xCox)2As2 multilayers and quasi-multilayers with Tc = 29 K
چکیده انگلیسی
In this work we present multilayers consisting of Fe and Co-doped BaFe2As2 fabricated by UHV pulsed laser deposition. Employing the advantage of a coherent interfacial bonding between the FeAs tetrahedra of the iron pnictide and bcc Fe enables the growth of epitaxial bi- and multilayers of Fe and the new Fe-based superconductors with high crystalline quality. Epitaxial growth of the multilayers was controlled in situ by reflection high energy electron diffraction (RHEED) and after film growth by X-ray diffraction and TEM analysis. The stoichiometry determined by Auger electron spectroscopy (AES) indicated As-deficient layers of Co-doped Ba-122. The multilayers exhibit critical temperatures of Tc,90 = 29 K which is so far the highest critical temperature reported for Co-doped Ba-122. We propose that the Tc-enhancement is caused by As-vacancies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 494, 15 November 2013, Pages 185-188
نویسندگان
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