Pressure as a probe of the glassy state of ferroelectrics with random site disorder | Zendy

G. A. Samara | Zendy; L.V. Hansen | Zendy

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Pressure as a probe of the glassy state of ferroelectrics with random site disorder

Author(s) -

G. A. Samara,

L.V. Hansen

Publication year - 1998

Language(s) - English

Resource type - Reports

DOI - 10.2172/642800

Subject(s) - ferroelectricity , crossover , materials science , polar , condensed matter physics , dipole , relaxation (psychology) , soft modes , radius , chemical physics , chemistry , dielectric , physics , psychology , social psychology , computer security , optoelectronics , organic chemistry , astronomy , artificial intelligence , computer science

Results on lanthanum-modified lead zirconate-titanates (PLZTs) have revealed a pressure-induced crossover from a normal ferroelectric to a relaxor state and the continuous evolution of the dynamics and energetics of the relaxation process. This crossover appears to be a general feature of soft mode ferroelectrics with random site dipolar impurities or polar nanodomains and results from a large decrease in the correlation radius among polar nanodomains -- a unique property of soft mode ferroelectrics

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