کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1619691 1516386 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
X-ray analysis of phase coexistence and electric poling processing in alkaline niobate-based compositions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
X-ray analysis of phase coexistence and electric poling processing in alkaline niobate-based compositions
چکیده انگلیسی

The characteristic and origin of two-phase coexistence and the content of each phase in typical alkaline niobate-based lead-free compositions were investigated through the refinement of X-ray diffraction peaks and the measurement of dielectric constant versus temperature curves. The diffuse nature of polymorphic phase transition has resulted in the coexistence of two ferroelectric phases within a wide composition and temperature range. As a result, the optimum piezoelectric properties appear in the composition rich in tetragonal phases and there is a remarkable poling temperature effect. Discussions on the difference between morphotropic phase boundary and polymorphic phase boundary were made in combination with the variation of electrical properties.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 493, Issues 1–2, 18 March 2010, Pages 197–201
نویسندگان
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