Effect of Reoriented Nanodomains on Crystal Structure and Piezoelectric Properties of Polycrystalline Ferroelectric Ceramics
作者： Qiaolan Fan , Weidong Zeng , Changrong Zhou , Zhenyong Cen , Changlai Yuan
DOI: 10.1007/S11664-015-3795-4
关键词: Crystallography 、 Ferroelectric ceramics 、 Piezoelectricity 、 Coherence length 、 Condensed matter physics 、 Ceramic 、 Phase (matter) 、 Crystallite 、 Solid-state physics 、 Materials science 、 Poling
摘要: It has been widely accepted that electric fields induce a reversible structural phase transition and thus yield giant piezoelectric responses in ferroelectric ceramics. Based on detailed measurements of polycrystalline (Li0.5Nd0.5)2+-modified 0.95Bi0.5Na0.5TiO3-0.05BaTiO3 ceramics, we demonstrate this study coherent diffraction from nanodomains ceramics masks the real crystal structure. The observed electric-field-induced transformation behavior is consequence relaxor-to-ferroelectric caused by changes coherence length nanodomains. A driving mechanism structure–property relationship which high properties originate correlated ordering during poling proposed.
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