Influence of Bi2O3 addition on structure and dielectric properties of Ag(Nb0.8Ta0.2)O3 ceramics

• Autorzy: Cao L. , Li L. , Zhang P. , Wang H.
• Języki publikacji: EN

Abstrakty

EN

The structure and dielectric properties of perovskite Ag(Nb0.8Ta0.2)O3 ceramics were explored. A small amount of Bi2O3 was used to modify the dielectric properties of the ceramics. The addition of Bi2O3 led the ceramics to a high densification and optimal dielectric properties. With the addition of 4.5 wt% Bi2O3, the permittivity of Ag(Nb0.8Ta0.2)O3 ceramics increased from 470 to 733, the dielectric loss decreased from 62×10-4 to 6.7×10-4, and the temperature coefficient of capacitance, TCC, decreased from 2004 ppm/°C to -50 ppm/°C. The high permittivity obtained was due to the high densification and weak Ta-O or Nb-O bond strength in the oxygen octahedron that results from the addition of Bi2O3.

Słowa kluczowe

EN

Ag(Nb0:8Ta0:2)O3 ceramics; Bi2O3; dielectric properties high permittivity; low dielectric loss

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2011
• Tom: Vol. 29, No. 1
• Strony: 1--8
• Opis fizyczny: Bibliogr. 16 poz.,

Twórcy

autor

Cao L.

autor

Li L.

autor

Zhang P.

autor

Wang H.

• School of Electronic and Information Engineering Tianjin University Tianjin 300072 China

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