6533b825fe1ef96bd12830a0

RESEARCH PRODUCT

<title>Dielectric polarization in <emph type="1">x</emph>PbZn<formula><inf><roman>1/3</roman></inf></formula>Nb<formula><inf><roman>2/3</roman></inf></formula>O<formula><inf><roman>3</roman></inf></formula>-(1-<emph type="1">x</emph>)PbSc<formula><inf><roman>1/2</roman></inf></formula>Nb<formula><inf><roman>1/2</roman></inf></formula>0<formula><inf><roman>3</roman></inf></formula> ferroelectric solid solutions</title>

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Manifestation of relaxor properties in the x PbZn1/3Nb2/3O3-(1-x )PbSc1/2Nb1/203 ceramic solid solution system, similar to those observed in lead magnesium niobates, are reported. Dependence of the effective dielectric permittivity and dielectric loss on the temperature at frequencies of 0.1-10 Hz and different measuring field amplitudes E 0 are examined ceramic samples of 0.05PbZn1/3Nb2/3O3-0.95PbSc1/2Nb1/203. It is demonstrated that the temperature at which the dielectric permittivity has a maximum, T m, decreases with the increase of E 0. The dependence of T m on the frequency in both strong and weak fields is shown to follow the Vogel-Fulcher law, with Voger-Fulcher temperature decreasing with the increase of E 0. The results of the dielectric studies in the x PbZn1/3Nb2/3O3-(1-x )PbSc1/2Nb1/203 system are discussed in terms of the transition from the paraelectric to ferroelectric phase through the relaxor and glass states.© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.