کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1527851 995396 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dielectric and ferroelectric properties of lead zirconate titanate-barium titanate ceramics prepared by a modified mixed-oxide method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Dielectric and ferroelectric properties of lead zirconate titanate-barium titanate ceramics prepared by a modified mixed-oxide method
چکیده انگلیسی

Ceramic solid solutions within the system (1 − x)Pb(Zr0.52Ti0.48)O3–xBaTiO3, where x ranged from 0.0 to 1.0, were prepared by a modified mixed-oxide method. The crystal structure, microstructure, dielectric and ferroelectric properties of the ceramics were investigated as a function of composition via X-ray diffraction (XRD), scanning electron microscopy (SEM), dielectric spectroscopy and hysteresis measurement. The (1 − x)PZT–xBT solid solutions showed that with increasing solute concentration (BT or PZT), the phase transformation became diffuse. This was primarily evidenced by an increased broadness in the dielectric peak, with a maximum peak width occurring at x = 0.5. The P–E hysteresis loop measurements showed that while BT showed a well-formed hysteresis loop, PZT and 0.1PZT–0.9BT ceramics exhibited pinched-shape hysteresis loops due to abnormal domain switching mechanism. In addition, other compositions exhibited very slim-loop hysteresis occurred in materials with mixed phase or with diffuse phase transition. This observation was believed to be caused by nano-scaled chemical heterogeneity in these compositions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 104, Issue 1, 15 July 2007, Pages 113–118
نویسندگان
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