Paper Titles
Aqueous Processing of Textured Silicon Nitride Ceramics by Slip Casting in a Strong Magnetic Field
p.1009
Biomimetic Deposition of Apatite on Zr-1Nb and Ti-6Al-4V
p.1013
Design of Porosity Level for Porous Si3N4 Ceramics Manufactured by Nitriding and Post-Sintering of Si Powder Compact
p.1017
Effect of Powder Synthesis Processing on the Microstructure and Electrical Conductivity of Sintered CNTs/Fe/Al2O3 Nanocomposites
p.1021
Effects of Y2O3 Addition on the Microstructure and Electrical Property of TiO2-Excess BaTiO3
p.1025
Formation of Barrier Ribs via Micro Molding Process Using UV-Curable Paste
p.1029
High-Frequency Induction Heating Sintering of Hydroxyapatite-(Zro2+3%Mol Y2o3) Bioceramics
p.1033
High Temperature Stability of Bulk Ti3SiC2 Materials in Air
p.1037
Making Alumina Microcomponents From Al Powder
p.1041

Effects of Y2O3 Addition on the Microstructure and Electrical Property of TiO2-Excess BaTiO3

Article Preview

Abstract:

When Y2O3 was added to Ti-excess BaTiO3 ((Ba+Y)/Ti =1), the the area occupied by Y3+ ion was confirmed by its microstructure development, electrical conductivity behavior and lattice constant. Grain growth inhibition was observed when the content of donor dopant exceeded a critical value (x≈0.01) in BaTiO3+x(0.5Y2O3+TiO2) system. A donor-doped behavior was observed at various Y contents (0.2~3.0 mol% Y) when Y2O3 was added to TiO2-excess BaTiO3. As Y content was increased, (002) and (200) peaks shifted to higher angles and the lattice constant (a and c axis) decreased gradually. These results confirms that Y3+ ions preferentially occupy Ba sites when Ba/Ti < 1.

You might also be interested in these eBooks
Progress in Powder Metallurgy View Preview

Info:

Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

1025-1028

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.1025

Citation:

Cite this paper

Online since:

January 2007

Authors:

Jong Han Kim, Young Ho Han

Keywords:

BaTiO3, Defect, Electrical Conductivity, Lattice Constant, Y

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] Y. Nakano, A. Satoh, A. Hitomo and Nomura : T., Ceramic Trans-actions Vol. 32 (1993), p.119.

Google Scholar

[2] Y. Tsur, T. D. Dunbar and C. A. Randall : J. Electroceram. Vol. 7 (2001), p.25.

Google Scholar

[3] J. H. Jeong, M. G. Park and Y. H. Han : J. Electroceram. Vol. 13 (2004), p.805.

Google Scholar

[4] F. A. Kröger and Vink : Solid State Physics. Academic Press, New York (1956), p.307.

Google Scholar

[5] L. A. Xue, Y. Chen and J. Brook : Materials Science and Engineering Vol. B1 (1988), p.193.

Google Scholar

[6] M. H. Lin and H. Y. Lu : Mater. Sci. Eng. Vol. A335 (2002), p.101.

Google Scholar

[7] C. J. Peng, and H. Y. Lu : J. Am Ceram. Soc. Vol. 71.

Google Scholar

[1] (1988), p. C44.

Google Scholar

[8] C. J. Ting, C. J. Peng, H. Y. Lu and S. T. Wu : J. Am Ceram. Soc. Vol. 73 (1990), p.329.

Google Scholar

[9] J. H. Kim, S. H. Yoon and Y. H. Han : J. Eur. Ceram. Soc. In press.

Google Scholar

[10] K. Takada, E. Chang and D. M. Smyth : Adv. in Cera. Vol. 19 (1986), p.147.

Google Scholar

[11] N. H. Chan, and D.M. Smyth : J. Am. Ceram. Soc. Vol. 67 (1984), p.285.

Google Scholar

[12] J. Daniels and K. H. Härdtl : Philips Res. Repts. Vol. 31 (1976), p.489.

Google Scholar

[13] Y. Tsur, A. Hitomi, I. Scrymgeour and C. A. Randall : Jpn. J. Appl. Phys. Vol. 40 (2001).

Google Scholar