Fabrication and Characterization of Alkoxy-Derived (Na, K)NbO3 Series Powder

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Abstract:

Various KNbO3 powders have been derived from sol-gel process by using different preparation and heating conditions. KNbO3 powder derived from ethanol solution and fabricated at 800oC was most suitable as the raw material of KNbO3 bulk ceramics, because of the small grain size of about 250 nm and its homogeneous size distribution.

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43-46

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October 2007

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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[1] K. Nakamura and Y. Kawamura: IEEE Trans. Ultrason. Ferroelectr. Freq. Control 47 (2000) 750.

Google Scholar

[2] K. Kakimoto, I. Masuda and H. Ohsato: Jpn. J. Appl. Phys. 42 (2003) 6102.

Google Scholar

[3] S. Tashiro, H. Nagamatsu and K. Nagata: Jpn. J. Appl. Phys. 41 (2002) 7113.

Google Scholar

[4] K. Tanaka, K. Suzuki, K. Nishizawa, T. Miki and K. Kato: Jpn. J. Appl. Phys. 44 (2005) 6885.

Google Scholar

[5] K. Tanaka, K. Kakimoto and H. Ohsato: Key Eng. Mater. 320 (2006) 85.

Google Scholar

[6] K. Tanaka, K. Kakimoto and H. Ohsato: J. Crystal Growth 294 (2006) 209.

Google Scholar

[7] K. Tanaka, K. Kakimoto and H. Ohsato: J. Eur. Ceram. Soc., accepted. e-mail: kiyo-tanaka@nitech. ac. jp Fax: 052-735-7734 Intensity (arb. units) 20 40 30 2theta (deg) 50 60 • 2-methoxyethanol • in O2(0. 5 L/min) reflux 80oC reflux 120oC ◇ :KNbO3(32-0822) ◆ :K4Nb6O17(76-0977) Fig. 5 Reflux temperature dependence on the XRD patterns for KNbO3 powders heat-treated at 800oC. Fig. 6 Reflux temperature dependence on the SEM images for KNbO3 powder fabricated from 2-methoxyethanol. The heat-treatment temperature and atmosphere were at 800oC and in O2 (0. 5 L/min), respectively. (b) reflux at 80oC (a) reflux at 120oC.

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