کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1820638 | 1525769 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An EXAFS study of RuSr2GdCu2O8: Evidence of magnetoelastic coupling
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
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چکیده انگلیسی
The EXAFS spectrum of two samples of RuSr2GdCu2O8 prepared by means of slightly different procedures was measured in the temperature range from 10 up to 300Â K on the K-edge of Cu. Both the basal and the apical Cu-O distances are not influenced by the magnetic and the superconducting transitions. Moreover the temperature dependence of the Debye-Waller factors of the R(Cu-Obasal) distance for both samples is in agreement with the Debye model for thermal disorder. On the contrary, Ï2(Cu-Oapical) shows a clear peak around the magnetic transition. This effect is attributed to magnetoelastic coupling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity and its Applications - Volume 467, Issues 1â2, 1 December 2007, Pages 167-173
Journal: Physica C: Superconductivity and its Applications - Volume 467, Issues 1â2, 1 December 2007, Pages 167-173
نویسندگان
A. Paolone, C. Castellano, O. Palumbo, F. Cordero, R. Cantelli, A. Vecchione, M. Gombos, S. Pace, M. Ferretti,