کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10624047 | 989583 | 2016 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural and magnetic properties of LaCrO3 half-doped with Al
ترجمه فارسی عنوان
خواص ساختاری و مغناطیسی لاکتوبا نیمه دوده با آلومینیوم
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
Structural and magnetic properties of LaCrO3 half-doped with Al are reported in this work. Pure and half-doped samples were prepared by combustion synthesis using urea as fuel. The crystal structure was investigated by X-ray diffraction and Rietveld analysis. A structural phase transition caused by a decrease of the chemical pressure was observed. The scanning electron microscopy (SEM) images show the formation of porous samples with particles of irregular morphologies. A quantitative Energy-dispersive X-ray spectroscopy (EDS) analysis on the surface indicates the inclusion of the Al on the structure. However, a small deficiency of La and Al was observed. Magnetization measurements as a function of temperature reveal an antiferromagnetic order in both samples. A large decrease of TN (Néel temperature) and a reduction of the frustration factor is observed in the sample doped with Al. The magnetic isothermal at 5Â K shows a typical antiferromagnetic behavior with a slightly spin canting for the doped sample.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 42, Issue 13, October 2016, Pages 14499-14504
Journal: Ceramics International - Volume 42, Issue 13, October 2016, Pages 14499-14504
نویسندگان
Romualdo S. Jr., Petrucio Barrozo, N.O. Moreno, J. Albino Aguiar,