Dielectric and piezoelectric properties of Pb(Mg1/3Nb2/3)O-3-PbTiO3-Pb(Mg1/2W1/2)O-3 ceramicsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Data are presented on the phase composition, crystal structure, microstructure, and dielectric and piezoelectric properties of (1-y)[(1-x)Pb(Mgl/3Nb2/3)O-3-xPbTiO(3)] -yPb(Mg1/2W1/2)O-3 (x = 0.30-0.36; y = 0, 0.05, 0.10) ceramics. It is shown that the use of fine-particle magnesia as a starting reagent ensures the formation of single-phase materials. The ceramics with a rhombohedral structure are found to exhibit relaxor behavior. Increasing the content of the Pb(Mg1/2W1/2)O-3 perovskite leads to ordering of the domain structure of poled ceramics and increases their piezoelectric charge coefficient d(31) and the width of their phase transitions.