کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10639914 | 995788 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Magnetic, magnetocapacitance and dielectric properties of Cr doped bismuth ferrite nanoceramics
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
BiFe1âxCrxO3 (x = 0, 0.04, 0.06 and 0.08) nanoceramics were prepared by sol-gel method. Nanoceramics were calcined at 450 °C. Calcined powders were leached in diluted nitric acid to get single phase. TEM analysis shows the particle size to be â¼80 nm. Thermogravimetric analysis of as prepared powder indicates that the single phase is formed at around 450 °C. Magnetization was found to increase as the concentration of Cr was increased. Dielectric constant and dielectric loss were found to decrease with increase in frequency for all the compositions. Magnetocapacitance was found to increase with magnetic field. For BiFe1âxCrxO3 (x = 0.04, 0.06 and 0.08) nanoceramics, the change of dielectric constant induced by magnetic field may be well approximated by ÎÉ/É = γM2, here, γ (magnetoelectric interaction) is small and positive. A linear fit gave the value of γ of â¼18.4 Ã 10â2, 12.3 Ã 10â2 and 3.3 Ã 10â2 for BiFe1âxCrxO3 (x = 0.04, 0.06 and 0.08) nanoceramics, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: B - Volume 176, Issue 3, 25 February 2011, Pages 227-230
Journal: Materials Science and Engineering: B - Volume 176, Issue 3, 25 February 2011, Pages 227-230
نویسندگان
Amit Kumar, K.L. Yadav,