Uniaxial mechanical stresses and their influence on the parameters of the ferroelectric phase transition in pressure-treated barium titanate. (17th February 2017)

• Record Type: Journal Article
• Authors: Pugachev, A. M.; Zaytseva, I. V.; Krylov, A. S.; Malinovsky, V. K.; Surovtsev, N. V.; Borzdov, Yu. M.; Kovalevsky, V. I.
• Is Part Of: Ferroelectrics. Volume 508(2017)
• Page Start: 161
• Page End: 166
• Publication Date: 2017-02-17
• Subjects: BaTiO3 -- second harmonic generation -- residual mechanical stresses -- ferroelectric phase transition; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2017.1289769
• Languages: English
• ISSNs: 0015-0193

Abstract

ABSTRACT: The dependence of the E(TO) line in Raman spectrum of a BaTiO3 powder on applied uniaxial pressure up to 14 GPa are obtained and the values of residual mechanical stresses are evaluated. The second harmonic generation technique is used to obtain the width and temperature of the cubic-to-tetragonal phase transition in the powder treated by uniaxial pressures. The interrelations between the phase transition width, temperatures, and residual mechanical stresses are established. These interrelations differ from expectations based on known hydrostatic pressure-induced effects in BaTiO3 .