کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5448143 | 1511767 | 2017 | 32 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of cobalt substitution on the physical properties of the perovskite strontium ferrite
ترجمه فارسی عنوان
اثرات جایگزینی کبالت بر خواص فیزیکی فریت استرانسیم پرورسکیت
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
Structural, electronic and magnetic properties of the perovskites SrFe1-xCoxO3 (x = 0, 0.25, 0.50, 0.75 and 1) are investigated using generalized gradient approximation (GGA) and GGA with Hubbard potential within the frame work of spin-polarized density functional theory (DFT). The calculated structural parameters and geometries are consistent with the experimental results and observed decrease in the lattice constants with increase in Co concentration. The bonding nature is visualized through electron charge densities and confirms that the bond between SrâFe/Co is ionic, Fe/CoâO is covalent and CoâFe is metallic. Band profiles comparison and electrical properties reveal that these compounds are metallic. It is observed that the magnetic interaction is anti-ferromagnetic at Fe rich side while ferromagnetic for Co substituted compounds. The transition of anti-ferromagnetism to ferromagnetism is explained through exchange interactions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 196, 1 August 2017, Pages 222-228
Journal: Materials Chemistry and Physics - Volume 196, 1 August 2017, Pages 222-228
نویسندگان
Shahid Mehmood, Zahid (Assistant Professor), Imad Khan, Iftikhar Ahmad,