کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1803424 | 1024617 | 2009 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The magnetic behaviour of the magnetically diluted spinel compound Fe0.6Mg1.6Ni0.1Ti0.7O4 studied by Mössbauer spectroscopy
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
From a new magnetically diluted spinel oxide with composition Fe0.6Mg1.6Ni0.1Ti0.7O4 an as-prepared sample and one after reheating three times have been investigated with Mössbauer spectroscopy. The spectra of the as-prepared sample clearly show a typical superparamagnetic behaviour of magnetic clusters with diverging sizes. On the other hand, the reheated sample exhibits a sharp magnetic transition at 16 K. External-field Mössbauer measurements of the latter reveal spin canting to be exclusively present on the octahedral sites which disappears at the magnetic transition temperature. These results show that this spinel compound exhibits a transition to a spin-glass for which the random freezing only occurs on the octahedral sites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 15, August 2009, Pages 2365–2372
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 15, August 2009, Pages 2365–2372
نویسندگان
A.M. Alakrmi, R.E. Vandenberghe, E. De Grave,