Phase transition in Ba5RTi3Nb7O30 (R = Dy, Sm) ferroelectric ceramics (original) (raw)

Abstract

The polycrystalline samples of BaJRTiJNb7038 (R = Dy, Sm) complex tungsten-bronze-type compounds were prepared using a high-temperature solid-state reaction technique. Preliminary X-ray structural analysis of the compounds suggests the formation of single-phase compounds in an otthorhombic crystal system at room temperature. Dielectric studies as a function of frequency and temperature show that these compounds have diffuse phase transition with different diffuseness characteristics.

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