Title of article :
Stabilization of the low temperature coefficient of dielectric constant of Ca5Nb2TiO12 by Zr doping
Author/Authors :
Cava، نويسنده , , R.J. and Krajewski، نويسنده , , J.J، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1999
Abstract :
The effects of small amounts of Zr substitution for Ti in the low loss, low temperature coefficient dielectric material Ca5Nb2TiO12 are reported. Substitutions at the 1–5% level significantly increase the range of possible firing temperatures at which polycrystalline ceramics with low temperature coefficients can be obtained. This low temperature coefficient state is at the borderline between ordered and disordered states of the Ca, Nb, and Ti ions in the B sites of the perovskite lattice. The kinetics for ordering is apparently enhanced by the Zr substitutions.
Keywords :
A. Oxides , A. Ceramics , D. Dielectric properties , D. Phase transitions
Journal title :
Materials Research Bulletin
Journal title :
Materials Research Bulletin