Anomalies of the pyroelectric and dielectric properties of ferroelectric ceramics of the PbZr^sub 1-x^Ti^sub x^O3 system with 0.06 [less than or equal to] x [less than or equal to] 0.35 at the R3cR3m phase transition

• Published in: Bulletin of the Russian Academy of Sciences. Physics 2008-04, Vol.72 (4), p.556
• Main Authors: Zakharov, Yu N, Lutokhin, A G, Korchagina, N A, Kuznetsov, V G
• Format: Article
• Language: English
• Subjects: Anomalies; Binary systems; Ceramics; Dielectric properties; Diffraction; Direct current; Electric fields; Ferroelectric materials; Phase transitions; Single crystals; X-ray diffraction
• ISSN: 1062-8738; 1934-9432
• DOI: 10.3103/S106287380804031X

The temperature dependences of the pyroelectric and dielectric properties of ferroelectric ceramics of the PbZr1 - xTixO3 binary system with x = 0.06, 0.07, 0.08, 0.1, 0.15, 0.2, 0.25, 0.3, and 0.35 have been obtained synchronously for each sample in the range of the structural phase transition between the states with the symmetry space groups R3c R3m. It is established that the temperatures of this phase transition for unpolarized and polarized samples coincide in the range 0.06 [less than or equal to] x [less than or equal to] 0.15. In this case, the x-T phase diagram, constructed on the basis of the pyroelectric and dielectric data, is in excellent agreement with the X-ray diffraction data on single crystals in this concentration range. The effect of dc electric fields from 5 × 105 V m-1 did not lead to any temperature shifts of the R3c R3m phase transition for the compositions with 0.06 [less than or equal to] x [less than or equal to] 0.25.