Ferroelectric phase transition in Ba5RTi3Nb7O30 [R=Nd, Eu, Gd] ceramics |
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| Authors: | R N P Choudhary S R Shannigrahi A K Singh |
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| Affiliation: | (1) Department of Physics, Indian Institute of Technology, 721 302 Kharagpur, India |
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| Abstract: | Polycrystalline samples of Ba5RTi3Nb7O30 R=Nd, Eu, Gd], were prepared using high-temperature solid-state reaction technique. Preliminary X-ray structural analysis
of the compounds shows the formation of single phase compounds (orthorhombic crystal system) at room temperature. Detailed
studies of dielectric properties (ɛ, tanδ,σ) as a function of frequency (400 Hz to 10 kHz) and temperature (30° to 380°C) show that these compounds exhibit diffuse ferroelectric
phase transition. |
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| Keywords: | Polycrystalline ferroelectric tungsten-bronze structure dielectric constant electrical conduction |
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