Enhanced dielectric properties in Nb-doped BT-BMT ceramics. Issue 16 (December 2016)

• Record Type: Journal Article
• Authors: Muhammad, Raz; Iqbal, Yaseen
• Is Part Of: Ceramics international. Volume 42:Issue 16(2016)
• Page Start: 19413
• Page End: 19419
• Publication Date: 2016-12
• Subjects: Perovskites -- BaTiO3 -- High temperature dielectrics; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2016.08.152
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The dielectric properties of lead-free solid solution, 0.5BaTiO3 –0.5Bi(Mg1/2+ x /6 Ti(1− x )/2 Nb x /3 )O3 ( x =0.01–0.25), synthesized via a conventional solid state route were investigated. The thermal stability range of relative permittivity remarkably increased with an increase in x from 0.01 to 0.25. 0.5BaTiO3 –0.5Bi(Mg1/2+ x /6 Ti(1 − x )/2 Nb x /3 )O3 ( x =0.20) composition showed high temperature stable relative permittivity (1100), revealing a change of less than ±15% across 55–500 °C and loss tangent (≤0.025) over the temperature range 102–425 °C. In comparison with other known materials for high temperature applications, the excellent temperature stability and high electrical resistivity of the x =0.2 composition suggested that this material can be a promising base material for fabrication of high temperature ceramic capacitors.