کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7992420 | 1516146 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural and magnetic properties of frustrated GaxMn(3-x)O4(1.2 â¤Â x ⤠1.6) spinels
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Structural and magnetic properties of frustrated GaxMn(3-x)O4(1.2 â¤Â x ⤠1.6) spinels Structural and magnetic properties of frustrated GaxMn(3-x)O4(1.2 â¤Â x ⤠1.6) spinels](/preview/png/7992420.png)
چکیده انگلیسی
We report a systematic study of the structural and magnetic properties of frustrated compounds of GaxMn(3âx)O4 (1.2â¯â¤â¯xâ¯â¤â¯1.6) prepared by solid-state reaction. Using Rietveld refinement of X-ray diffraction patterns and O'Neill-Navrotsky model, we demonstrate that the system GaxMn(3âx)O4 (1.2â¯â¤â¯xâ¯â¤â¯1.6) is an inverse spinel with low inversion parameter, in which Ga3+ replaces Mn3+ cations located in B-sites. The inverse magnetic susceptibility, the shape of ZFC/FC magnetization curves at low temperatures, the existence of hysteresis in all compounds, the frustration parameter and the spontaneous magnetization analysis show that the compounds with xâ¯=â¯1.2-1.4 exhibit a non-collinear ferrimagnetic order and the compounds with xâ¯=â¯1.5-1.6 exhibit a frustrated non-collinear ferrimagnetic order. Spin wave stiffness parameters were determined for each composition using the fitting results of spontaneous magnetization curves. It is demonstrated that for the compounds xâ¯=â¯1.2-1.4 with a non-frustrated ferrimagnetic order, the change of spontaneous magnetization Ms(T) obeys to Bloch's law (T3/2). For xâ¯=â¯1.5-1.6, the compounds exhibit a frustrated ferrimagnetic order, and the Ms(T) shows a deviation from Bloch's law.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 748, 5 June 2018, Pages 528-536
Journal: Journal of Alloys and Compounds - Volume 748, 5 June 2018, Pages 528-536
نویسندگان
B. Mehdaoui, R. Moubah, B. Orayech, M. Bahout, O. Peña, M. Jáuregui, D. Saurel, A. El Bouari,