کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1801582 | 1024572 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic anisotropy and spin fluctuations in the paramagnetic dimer [Fe(OMe)(dpm)2]2[Fe(OMe)(dpm)2]2: Mössbauer spectroscopy and ab initio calculations
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The magnetic anisotropy and the spin fluctuations of the paramagnetic molecule [Fe(OMe)(dpm)2]2[Fe(OMe)(dpm)2]2 are analyzed by means of Mössbauer spectroscopy in the temperature range [7.6–33] K. Spectra in the presence of a 5 T magnetic field directed along the γγ rays were collected, by using a sample of pseudo-single crystal prepared by oriented grains. From the fits of the spectra, the hyperfine parameters are determined. Fits give also the value and direction of the magnetic anisotropy, referred to the electric field gradient (EFG) principal axes. The latter, together with the EFG components, were evaluated by means of ROHF ab initio calculations. Lastly, the rate of the spin transitions in function of T is discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 320, Issue 6, March 2008, Pages 898–905
Journal: Journal of Magnetism and Magnetic Materials - Volume 320, Issue 6, March 2008, Pages 898–905
نویسندگان
L. Cianchi, F. Del Giallo, P. Moretti, G. Spina, M. Mancini, A. Caneschi, M. Lantieri,