کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7998884 | 1516252 | 2015 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural, electrical and magnetic properties of rare-earth and transition element co-doped bismuth ferrites
ترجمه فارسی عنوان
خواص ساختاری، الکتریکی و مغناطیسی فریتز بیسموت با دوزهای نادر خاک و عنصر انتقال
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
چکیده انگلیسی
Pure and doped multiferroic samples of bismuth ferrites (BFO) were successfully synthesized by the sol-gel technique. Detailed investigations were made on the influence of (Sm and Mn, Co, Cr) co-doping on structural, electrical, ferroelectric and magnetic properties of the BFO. A structural phase transformation from rhombohedral to orthorhombic with co-doping is confirmed through XRD. It is also observed that Sm-doping increases the symmetry and decreases the second phases noticeably. Microstructure investigation using the scanning electron microscope showed a reduction of grain size with doping in BFO. Magnetic hysteresis loops showed that retentivity (Mr), coercivity (Hc) and saturation magnetization (Ms) of the doped samples were improved. Furthermore, the co-doping enhances the dielectric properties as a result of the reduction in the Fe2+ ions and oxygen vacancies. The room temperature P-E loop study shows that ferroelectric properties are strongly depend on doping.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 641, 25 August 2015, Pages 205-209
Journal: Journal of Alloys and Compounds - Volume 641, 25 August 2015, Pages 205-209
نویسندگان
Vivek Verma,