کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1646355 1517299 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrical properties of BiFeO3–BaTiO3 ceramics fabricated by mechanochemical synthesis and spark plasma sintering
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Electrical properties of BiFeO3–BaTiO3 ceramics fabricated by mechanochemical synthesis and spark plasma sintering
چکیده انگلیسی

0.75BiFeO3–0.25BaTiO3 (75BF–25BT) multiferroic powders were prepared by a mechanochemical synthesis at room temperature and the dense ceramics were sintered by a spark plasma sintering (SPS) at 1023–1073 K. Microstructures of the ball milled powders and SPS ceramics were thoroughly investigated through X-ray diffraction and scanning electron microscopy, respectively. A bulk density up to 96% of theoretical density was achieved in the SPS ceramics. Dielectric spectra of the 75BF–25BT ceramics were characterized in a broad range of temperature and frequency. Typical saturated ferroelectric hysteresis loops with remnant polarization of 10 μC/cm2 were obtained at room temperature, which makes it a good candidate for potential applications.


► High density BiFeO3–BaTiO3 ceramics by a new mechanochemical synthesis combined with spark plasma sintering (SPS) were investigated.
► Studied electrical properties of BiFeO3–BaTiO3 ceramics after vacuum annealing treatment at appropriate temperature.
► Substitution of BaTiO3 eliminated a small usual impurity phase in BiFeO3.
► Dielectric properties were enhanced by the mechanochemical synthesis and spark plasma sintering.
► Curie-temperature Tc, remanent polarization Pr, and piezoelectric constant d33 of the ceramics were investigated.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Letters - Volume 88, 1 December 2012, Pages 36–39
نویسندگان
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