Dynamics of Phase Transition in 0.4NBT-0.4ST-0.2PT Solid Solution

Autor: M. Dunce, Maija Antonova, A. Brilingas, Andris Sternberg, Š. Bagdzevičius, J. Banys, Maksim Ivanov, Eriks Birks, Š. Svirskas
Rok vydání: 2012
Předmět:
Zdroj: Integrated Ferroelectrics. 134:81-87
ISSN: 1607-8489
1058-4587
DOI: 10.1080/10584587.2012.665300
Popis: In this paper we present dielectric spectroscopy results of NBT-(0.6-x)ST-xPT with x = 0.2 solid solution. Dielectric investigations clearly showed a relaxor—normal ferroelectric phase transition at TPT = 419 K and low temperature and low frequency dispersion similar to coexistence of dipolar glass and ferroelectric phase. The mean relaxation time above the phase transition follows Vogel—Fulcher law with following parameters: E A = 0.179 eV, τ 0 = 3.39·10−14 s, T VF = 223 K.
Databáze: OpenAIRE
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