Ba0.5Sr0.5TiO3 Dielectric Materials Prepared by Citrate-nitrate Combustion

Abstract

Abstract: Ultra-fine Ba_0.5Sr_0.5TiO₃ (BST) powder was prepared by using barium nitrate, strontium nitrate, tetra-n-butyl titanate, and ammonium hydroxide
via citrate-nitrate combustion process. The pH value and dispersant, strongly influencing on the particle distribution of BST
powder, were investigated in detail. The precursor powders were pressed into tablets(φ=20.0mm, d=5.0 mm)and then fully sintered at
1300℃ for 2h.At 25℃, the dielectric constant and dissipation factor of the sintered sample were 1470 and 0.006 at 10kHz,
respectively, measured by a HP4192A Impedance.

Key words: （Ba, Sr）TiO₃, citrate-nitrate combustion, dielectric property

CLC Number:

TN304

SHEN Cai,LIU Qing-Feng,LIU Qian. Ba_0.5Sr_0.5TiO₃ Dielectric Materials Prepared by Citrate-nitrate Combustion[J]. Journal of Inorganic Materials.

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Ba_0.5Sr_0.5TiO₃ Dielectric Materials Prepared by Citrate-nitrate Combustion

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