Influence of antimony oxide on the dielectric properties of barium strontium titanate based ceramics

• Autorzy: Zhang C. , Qu Y.
• Języki publikacji: EN

Abstrakty

EN

The dielectric properties of Sb2O3 doped (Ba0.992-xSrxDy0.008)TiO3.004ceramics fabricated by a solid state route with various Sb2O3 contents and Sr/Ba ratios were investigated. The XRD patterns confirm the samples to be multiphase compounds composed of perovskite major phase and Ba4Ti13O30, Ba6Ti17O40, Ti7O13 secondary phases. The average lattice constant indicates that Sb3+ ions initially occupy the A-sites and then enter the B-sites serving as acceptor dopants. The Curie temperature decreases as the Sb2O3 content increases and as the Sr/Ba ratio increases also. The thermal stability of the electric permittivity increases as the Sb2O3 concentration increases but decreases as the Sr/Ba ratio increases. The resistivity and ac standing voltage decrease as the Sr/Ba ratio decreases. The Sb2O3 doped (Ba0.992-xSrxDy0.008)TiO3.004 ceramics with high permittivity, low dielectric loss, high ac standing voltage and low temperature coefficient of capacitor are obtained for applications in environment friendly capacitors.

Słowa kluczowe

EN

barium strontium titanate; doping effects; dielectrics; capacitors

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2009
• Tom: Vol. 27, No. 2
• Strony: 443--452
• Opis fizyczny: Bibliogr. 17 poz.

Twórcy

autor

Zhang C.

autor

Qu Y.

• Key Laboratory for Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, P. R. China

Bibliografia

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