Abstract
In order to search for relaxor ferroelectrics or relaxor antiferroelectrics in Pb-free substances, a theoretical approach is presented for hydrogen-bonded mixed crystals under conditions similar to those for relaxor perovskite oxides. On the basis of the theory for local resonance techniques proposed by one of the present authors, both boundary regions between ferroelectric (FE) and glassy (G) phases, and between antiferroelectric (AFE) and glassy (G) phases are investigated in FE-AFE mixed crystals of Rb1-x(NH4)xH2PO4 (abbreviated as RDP-ADP). Relaxor-like behavior as a large dispersion in dielectric constants is found in the AFE-G phase boundary region where a broad spectrum of quadrupole perturbed nuclear magnetic resonance (NMR-NQR) appears in quite different form to that of the FE-G phase boundary region. From this theoretical viewpoint, the conditions for inducing relaxor behavior are discussed by comparing with the results of X-ray diffraction analysis.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
