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
پیش نمایش صفحه اول مقاله
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,