ALBERT

Description:    Lanthanum-free high-transparency ferroelectric ceramics PbMg 1/3 Nb 2/3 O 3 − x PbZr 0.53 Ti 0.47 O 3 (PMN- x PZT) have been prepared for the first time by a two-stage sintering method. The dielectric and electro-optical properties of the PMN- x PZT ceramics of different compositions, with the values of x both far from the morphotropic phase boundary ( x = 10, 16, 23%) and close to it ( x = 33%), have been studied. It has been shown that, in compositions lying closer to the morphotropic phase boundary ( x = 23 and 33%), one observes, with no electric field applied, a first-order phase transition to a macrodomain ferroelectric phase, whereas the compositions far from the boundary ( x = 10, 16%) persist in the relaxor cubic phase down to the low-temperature domain. It has been found that, in the ceramic with x = 33%, the quadratic electro-optical coefficients have at high temperatures ( T 〉 340 K) the largest value among the relaxor systems, which expands the temperature interval of applicability of these solid solutions in industry. Content Type Journal Article Category Ferroelectricity Pages 2024-2029 DOI 10.1134/S1063783412100174 Authors L. S. Kamzina, Ioffe Physical-Technical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia Wei Ruan, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-Xi Road, Shanghai, 200050 China Guorong Li, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-Xi Road, Shanghai, 200050 China Jiangtao Zeng, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-Xi Road, Shanghai, 200050 China Journal Physics of the Solid State Online ISSN 1090-6460 Print ISSN 1063-7834 Journal Volume Volume 54 Journal Issue Volume 54, Number 10