کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5491674 1525124 2017 20 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Room temperature antiferroelectric-phase stability in BNT-BT lead-free ceramics
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Room temperature antiferroelectric-phase stability in BNT-BT lead-free ceramics
چکیده انگلیسی
In this work the electric field dependence of electrical polarization (hysteresis loop) has been investigated as a function of the frequency in the (Bi0.500Na0.500)0.920Ba0.065La0.010TiO3 ceramic system. Results, not previously reported in the current literature, revealed that the magnitude of the electric field, necessary to obtain true domain switching, is strongly dependent of the frequency of the applied electric field. The structural properties, studied from x-ray diffraction and Rietveld's refinement, showed the coexistence of both antiferroelectric (AFE) and ferroelectric (FE) phases at room temperature, confirming the major contribution for the AFE phase. A strong contribution of the AFE phase on the electric field dependence of the polarization has been also evaluated, even at higher frequencies, considering a non-power-law dependence for the coercive field.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica B: Condensed Matter - Volume 525, 15 November 2017, Pages 114-118
نویسندگان
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