Phase transition studies of pure and flux-grown barium titanate crystals

1976/08/01 by R. Clarke, R. M. Clarke · 2 citations
Engineering · Materials Science · #Acoustic Wave Resonator Technologies #Ferroelectric and Piezoelectric Materials #Advanced MEMS and NEMS Technologies

paper · doi:10.1107/s0021889876011436

Abstract

The temperature dependence of the axial lattice spacings of a pure BaTiO3 crystal, grown from a `top-seeded' TiO2-rich melt, is presented for the four phases. This behaviour is compared with that of a crystal grown using a potassium fluoride flux. The lower ferroelectric paraelectric transition temperature and the smaller lattice parameter discontinuities exhibited by the latter crystal are attributed to the incorporation of impurities from the flux.

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