کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1819938 | 1525771 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of rare earth doping on the superconducting properties of MgB2
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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: Effects of rare earth doping on the superconducting properties of MgB2 Effects of rare earth doping on the superconducting properties of MgB2](/preview/png/1819938.png)
چکیده انگلیسی
Doping effects of rare earth oxides (REOy: RE = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) on the superconducting properties of MgB2 were investigated. Large fraction of the added RE turned into impurity phases: REB6 for RE = La–Gd and Yb, and REB4 for RE = Tb–Tm and Lu. We observed an increase in c-axis length from 3.523 to 3.533 Å when doped with Lu. Clear decreases in transition temperatures were observed in samples doped with Sm, Eu, Gd, Tm, Yb and Lu, indicating that these elements were successfully substituted for Mg. The decreases in Tc were most drastic in Yb-doped samples (Tc ∼ 32 K).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volumes 463–465, 1 October 2007, Pages 225–228
Journal: Physica C: Superconductivity and its Applications - Volumes 463–465, 1 October 2007, Pages 225–228
نویسندگان
Y. Katsura, J. Shimoyama, A. Yamamoto, S. Horii, K. Kishio,