کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1625596 | 1516432 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoemission electronic states and magnetic properties of Dy(Co1âxFex)2
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The valence band electronic states of Dy(Co1âxFex)2 Laves phases with x = 0, 0.05, 0.1, 0.7 and 1.0 were measured by the ultraviolet photoemission spectroscopy (UPS) in room temperature. The Curie temperatures were determined from the electrical resistivity measurements and from the temperature dependence of the hyperfine fields by 57Fe Mössbauer spectroscopy. The UPS spectra showed the very pronounced composition dependent emission at the Fermi energy EF, the broad band within 0 and â4 eV binding energy interval below EF and two strong features at about â6.5 and â9.0 eV. The spectra were compared with the band structure calculations using the full-potential linearized augmented plane waves (FLAPW) method. From the comparison we concluded that the intensities at EF are correlated with the values of the Curie temperatures, the broad band comes entirely from different 3d Co and/or Fe states and the strong two features come entirely from 4f electrons of dysprosium.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 442, Issues 1â2, 13 September 2007, Pages 292-295
Journal: Journal of Alloys and Compounds - Volume 442, Issues 1â2, 13 September 2007, Pages 292-295
نویسندگان
R. Zalecki, P. Stoch, P. Guzdek, A. KoÅodziejczyk, J. PszczoÅa,