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Author Huan, Yu ♦ Wang, Xiaohui ♦ Li, Longtu ♦ Koruza, Jurij
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ CERAMICS ♦ DIELECTRIC MATERIALS ♦ ELECTRIC FIELDS ♦ LITHIUM 5 ♦ MORPHOLOGY ♦ NIOBATES ♦ NONLINEAR PROBLEMS ♦ ORTHORHOMBIC LATTICES ♦ OZONE ♦ PHASE TRANSFORMATIONS ♦ SPACE DEPENDENCE ♦ TRANSMISSION ELECTRON MICROSCOPY
Abstract The nonlinear dielectric response in (Na{sub 0.52}K{sub 0.4425}Li{sub 0.0375})(Nb{sub 0.92−x}Ta{sub x}Sb{sub 0.08})O{sub 3} ceramics with different amounts of Ta was measured using subcoercive electric fields and quantified by the Rayleigh model. The irreversible extrinsic contribution, mainly caused by the irreversible domain wall translation, was strongly dependent on the domain configuration. The irreversible extrinsic contributions remained approximately the same within the single-phase regions, either orthorhombic or tetragonal, due to the similar domain morphology. However, in the polymorphic phase transition region, the domain wall density was increased by minimized domain size, as observed by transmission electron microscopy. This resulted in constrained domain wall motion due to self-clamping and reduced the irreversible extrinsic contribution.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-11-16
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 20


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