کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1600740 | 1005174 | 2011 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hyperfine interactions and electronic band structure in Tb0.27Dy0.73(Fe1âxNix)2 intermetallics
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کلمات کلیدی
A. Laves phases - A. لواس مراحلA. Magnetic intermetallics - A. میان فلزات مغناطیسیA. Rare earth intermetallics - A. میان فلزات نادر زمینB. Magnetic properties - B. خواص مغناطیسیB. Electronic structure of metals and alloys - B. ساختار الکترونیکی فلزات و آلیاژهاE. Electronic structure, calculation - E. ساختار الکترونیکی، محاسبه
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The consequences of Fe/Ni substitution in Tb0.27Dy0.73(Fe1âxNix)2 intermetallics, with a starting compound Tb0.27Dy0.73Fe2 known as Terfenol - D, were studied. Ni substitution introduces a local area, at sub-nanoscale, with different Fe/Ni neighbourhoods of the 57Fe atoms. 57Fe Mössbauer effect measurements for the intermetallic system Tb0.27Dy0.73(Fe1âxNix)2 carried out at 4.2Â K evidence an [100] easy axis of magnetization. Hyperfine interaction parameters - an isomer shift, a magnetic hyperfine field and a quadrupole interaction parameter - were determined from the fitting procedure of the spectra, both for the local neighbourhood area and, as averaged values, for the sample as bulk. As a result of Fe/Ni substitution, a Slater-Pauling type dependence for the average magnetic hyperfine field vs. Ni content is observed. Electronic band structure calculations using the Full-Potential Linearized Augmented Plane Waves (FLAPW) method were performed. The relation between the experimentally determined magnetic hyperfine field and the weighted magnetic moment calculated per transition metal atom is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 19, Issue 1, January 2011, Pages 54-61
Journal: Intermetallics - Volume 19, Issue 1, January 2011, Pages 54-61
نویسندگان
W. Bodnar, P. Stoch, P. Zachariasz, J. PszczoÅa, J. Suwalski,