کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1803129 1524905 2006 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of atomic arrangement in magnetic Fe–Pt nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Analysis of atomic arrangement in magnetic Fe–Pt nanoparticles
چکیده انگلیسی

The order parameter S of Fe–Pt nanoparticles is estimated from X-ray diffraction (XRD) patterns. The total intensity of a diffraction peak is obtained by Rietveld analysis as well as simply integrating the intensity. The Rietveld analysis is found to provide a plausible value of S even for a sample showing an XRD pattern with broad and overlapped peaks. Another order parameter Q, which is obtained from Mössbauer spectra, is introduced, and it is confirmed that Q is equivalent to the probability of Fe atoms being in the L10-type atomic arrangement. The coercivity of Fe–Pt nanoparticles is directly proportional to Q, while it vanishes at S=0.4, indicating that the magnetic property of Fe–Pt nanoparticles has a closer relationship to Q than S.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 300, Issue 2, May 2006, Pages 284–292
نویسندگان
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