کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5437276 1509798 2017 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Signature of multiferroicity and pyroelectricity close to room temperature in BaFe12O19 hexaferrite
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Signature of multiferroicity and pyroelectricity close to room temperature in BaFe12O19 hexaferrite
چکیده انگلیسی
In this paper, we have reported the signature of multiferroicity and pyroelectricity in BaFe12O19 hexaferrite close to room temperature. The BaFe12O19 hexaferrite samples are synthesized by co-precipitation method at different sintering temperature ranging from 800 to 1200 °C and study their structural, ferroelectric, magnetic, magnetoelectric and pyroelectric properties. X-ray Diffraction patterns show the pure phase formation for all samples. Morphological changes are examined through the scanning electron microscope. The maximum ferroelectric polarization (0.66 μC/cm2) is observed for the sample sintered at 1200 °C, however maximum magnetic polarization 74 emu/g is observed for sample sintered at 1000 °C. Magneto-electric coupling measurements are also performed through dynamic method and average magneto-electric coupling coefficient (~ 7.05 × 10−7 mV/cm Oe2) is observed at room temperature for the sample sintered at 1200 °C. Furthermore, maximum pyroelectric constant (147 × 10−13C/cm2 °C) is observed at 75 °C for BaFe12O19 samples sintered at 1200 °C. The observation of both multiferroicity and pyroelectricity close to room temperature in BaFe12O19 hexaferrite is interesting and useful for multifunctional devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 43, Issue 18, 15 December 2017, Pages 16403-16407
نویسندگان
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