Growth Condition and Ferroelectric Property of Mn-Doped Na0.5K0.5NbO3 Crystal

Yumi Inagaki; Kenichi Kakimoto; Hitoshi Ohsato

doi:10.4028/www.scientific.net/KEM.388.213

Paper Titles

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Grain-Orientation Control of Bi₅FeTi₃O₁₅ Ceramics Prepared by Magnetic-Field-Assisted Electrophoretic Deposition Method
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Effect of Template Particle Formation on Texture Development in Bi_0.5Na_0.5TiO₃ Ceramics
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Growth Condition and Ferroelectric Property of Mn-Doped Na_0.5K_0.5NbO₃ Crystal
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Dielectric Property of Poly- and Single-Crystalline BaTi₂O₅ Co-Substituted with SrO and ZrO₂
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Preparation of Transparent SBN Ceramics and their Opto-Electrical Properties
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Fabrication and Electrical Properties of (Bi_1/2Na_1/2)TiO₃-BiAlO₃ Ferroelectric Ceramics
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HomeKey Engineering MaterialsKey Engineering Materials Vol. 388Growth Condition and Ferroelectric Property of...

Growth Condition and Ferroelectric Property of Mn-Doped Na_0.5K_0.5NbO₃ Crystal

Abstract:

Mn-doped Na0.5K0.5NbO3 (NKN) crystals have been grown by self-flux method under several heat-treatment conditions. The cooling rate affected the quality of Mn-doped NKN crystals significantly. When the cooling rate was 0.5 oC/min at temperatures ranging from 1050 to 950 oC, the synthesized Mn-doped NKN crystal exhibited a single nucleation growth, compared with multinucleation growth when the cooling rate was 0.25 oC/min at temperatures ranging from 1050 to 950 oC. The frequency dependence on the ferroelectric P-E hysteresis loop of the Mn-doped NKN crystal was not observed at measurement frequency of 0.1 – 25 Hz. The annealed 0.5 mol% Mn-doped NKN crystal exhibited excellent P-E hysteresis loop with Pr of 45.0 μC/cm2 and Ec of 7.2 kV/cm.