Abstract
The influence of thermostating at 450°C on the dielectric and pyroelectric properties of PbZr1 − x Ti x O3 polarized ferroelectric specimens the range 0.02 ≤ x ≤ 0.05 has been investigated. An irreversible increase in the temperature of the ferroelectric-antiferroelectric phase transition was observed in all specimens upon their cooling after exposure to an elevated temperature for more than 1 h. The original position of the phase-transition point on the temperature scale was not recovered as a result of afterpoling upon cooling through the Curie temperature. Heating of the same specimens in the bridged mode up to 650°C with subsequent abrupt immersion in silicone oil at room temperature (hardening) is accompanied by an additional increase in the range of existence of the antiferroelectric phase from 3 to 15°C with an increase in the x concentration.
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Original Russian Text © Yu.N. Zakharov, A.A. Pavelko, A.G. Lutokhin, I.N. Andryushina, V.Z. Borodin, L.A. Reznichenko, 2009, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2009, Vol. 73, No. 8, pp. 1187–1189.
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Zakharov, Y.N., Pavelko, A.A., Lutokhin, A.G. et al. Irreversible increase in the temperature range of existence of the orthorhombic antiferroelectric phase in PbZr1 − x Ti x O3 ceramics (0.02 ≤ x ≤ 0.05). Bull. Russ. Acad. Sci. Phys. 73, 1125–1127 (2009). https://doi.org/10.3103/S1062873809080310
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DOI: https://doi.org/10.3103/S1062873809080310