(Ca,Sr,Ba)TiO3-Based Dielectrics Sintered in Reducing Atmosphere


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The anti-reducing sintering of (Ca,Sr,Ba)TiO3-based dielectrics was achieved by the cooperating effect of Mn2+, Ca2+, Mg2+, Dy3+ and Yb3+. A small quantity of Zr4+ partly substitution for Ti4+ can improve the temperature dependence of dielectric constant. But ZrO2 will also reduce the solid solubility of BaTiO3-SrTiO3-CaTiO3 ternary system, and may cause phase separation. The separated ferroelectric phase increases the capacitance change under DC bias. Non-reducible (Ca,Sr,Ba)(Ti,Zr)O3-based dielectrics with single orthorhombic phase of perovskite structure was obtained. The dielectric and DC bias properties are: .C/C (DC bias: 1.5kV/mm) <0.05%, ε =250~300, tgδ < 0.5%.



Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong




Z. Y. Lu et al., "(Ca,Sr,Ba)TiO3-Based Dielectrics Sintered in Reducing Atmosphere", Key Engineering Materials, Vols. 336-338, pp. 114-117, 2007

Online since:

April 2007




[1] H. Kishi, Y. Mizuno and H. Chazono: Jpn. J. Appl. Phys. Vol. 42 (2003), p.1.

[2] S. Satoh, Y. Fujikawa, A. Nagai and K. Msumiya: US patent 6407024 B1.

[3] H. Muto: AEI January 2004, p.52.

[4] T. Motoki, M. Naito, H. Sano, et al.: Jpn. J. Appl. Phys. 39 (2000), p.5565.

[5] J. M. Herbert: Trans. Br. Ceram. Soc. Vol. 62 (1963), p.645.

[6] I. Burn and G. H. Maher: J. Mater. Sci. Vol. 10 (1975), p.633.

[7] D.F.K. Hennings and H. Schreinemacher: J. Eur. Ceram. Soc. Vol. 15 (1995), p.795.

[8] D.F.K. Hennings: J. Eur. Ceram. Soc. Vol. 21 (2001), p.1637.

[9] W. D. Kingery, H. K. Bowen and D. R. Uhlmann: Introduction to Ceramics (Wiley-Interscience Publication, New York 1976), p.134. Fig. 4 Capacitance change vs. bias DC electrical field strength.