(K, Na)NbO3-based lead-free piezoceramics: Phase transition, sintering and property enhancement
نویسندگان
چکیده
منابع مشابه
New, Lead Free, Perovskites With a Diffuse Phase Transition: NaNbO3 Solid Solutions
Some of (1 − x)NaNbO3 − (x)ABO3 perovskite solid solutions exhibit a dramatic diffusion of the dielectric permittivity ε maximum and relaxor-type behavior when the second component concentration exceeds a threshold value x0. The concentration phase transition to the relaxor-like phase is abrupt (of the first order kind) that is seen from the step in the dependence of the ε(T ) maximum temperatu...
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Submicrometer-structured (Bi(0.5)Na(0.5))(0.94)Ba(0.06)TiO(3) ceramics ((G) < 720 nm) from nanopowders were studied. The real part of the optimum room temperature set of piezoelectric coefficients obtained from resonances of the BNBT6 dense ceramic disks and shear plates [d(31) = (-37 + 1.33i) pC·N(-1), d(15) = (158.3 - 8.31i) pC·N(-1), k(t) = 40.4%, k(p) = 26.8%, and k(15) = 40.2%] and d(33) (...
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Piezoceramic materials generally exhibit a notable instability of their functional properties when they work under real external conditions. This undesirable effect, known as nonlinear behavior, is mostly associated with the extrinsic contribution to material response. In this article, the role of the ferroelectric domain walls' motion in the nonlinear response in the most workable lead-based a...
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ژورنال
عنوان ژورنال: Journal of Advanced Ceramics
سال: 2012
ISSN: 2226-4108,2227-8508
DOI: 10.1007/s40145-012-0003-3