Phase Composition and Microwave Dielectric Properties of Low Firing (Zn0.8Sn0.2)TiO4 Ceramics

Abstract

Abstract: The effects of the preparing process and the doping ions on the phase composition of low firing (Zn_0.8Sn_0.2)TiO₄
ceramics were studied. The experimental results indicatethat the phase composition of the ceramics is dependent on the calcining
temperature of ZST powder, and it will affect τ_f, the temperature coefficient of resonant frequencies. Higher calcining
temperature for the powders is favorable to increase the stability of α-PbO type ZST phase for decreasing the temperature coefficient.
It is more useful to restrain the separation of oxides by doping with Nb⁵⁺. Dielectric constant ε, temperature coefficient τ_f
and Q·f of the samples doped with 0.15mol% Nb⁵⁺ sintered at 920℃ are 25, --2.44 ppm/℃ and 4868(5GHz).

Key words: low firing, phase composition, microwave dielectrics

CLC Number:

TQ174

WANG Yi-Lin,ZHAO Mei-Yu,WU Wen-Jun,LI Wei. Phase Composition and Microwave Dielectric Properties of Low Firing (Zn_0.8Sn_0.2)TiO₄ Ceramics[J]. Journal of Inorganic Materials.

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Phase Composition and Microwave Dielectric Properties of Low Firing (Zn_0.8Sn_0.2)TiO₄ Ceramics

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