Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
-
Received July 2, 2001
Accepted February 15, 2002
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
Preparation of BaO-PbO-Nd2O3-TiO2 Powders by Hydrothermal Synthesis
School of Chemical Engineering & Biotechnology, Ajou Univ., Suwon 442-749, Korea
kwseo@ajou.ac.kr
Korean Journal of Chemical Engineering, July 2002, 19(4), 688-693(6), 10.1007/BF02699319
Download PDF
Abstract
Homogeneous and nano-sized BPNT [(Ba1-xPbx)Nd2Ti5O14] powders were prepared under various hydrothermal conditions. Crystallinity and homogeneity of the synthetic powders were investigated. The microwave dielectric properties of the filters prepared with hydrothermal powders were compared with those of the filters prepared with conventional powders. The microwave dielectric properties of the filter prepared with the hydrothermal powders were also better than those of the filter manufactured with the conventional powders. The dielectric constant, quality constant and temperature coefficient of resonance frequency of hydrothermally prepared filter under optimum condition and measured at 3.5 GHz around were about 93, 6067 and 0 ppm/℃, respectively.
References
Dawson WJ, Ceram. Bull., 67(10), 1673 (1988)
Hakki BW, Coleman PD, IRE Trans. Microwave Theory Tech., 8, 402 (1960)
Kim BH, Yun YH, Korea Ceram. Soc., 33(12), 1311 (1996)
Kolar D, Gaberscek S, Stadler Z, Suvorov D, Ferroelectrics, 27, 269 (1980)
Ploude JK, Linn DF, O'Bryan HM, Thomson J, J. Am. Ceram. Soc., 58, 418 (1975)
Seo KW, Cho SH, Lee SH, Korean J. Chem. Eng., 18(1), 75 (2001)
Seo KW, Kong HG, Korean J. Chem. Eng., 17(4), 455 (2000)
Seo KW, Oh JK, J. Ceram. Soc. Jpn., 108(8), 691 (2000)
Wu YJ, Chen XM, J. Eur. Ceram. Soc., 19, 1123 (1999)
Wakino K, Minai K, Tamura HJ, Am. Ceram. Soc., 67(4), 278 (1984)
Yamada A, Utsumi Y, Watarai H, Jpn. J. Appl. Phys., 30(9B), 2350 (1991)
Yoon SO, Choi W, Kim KY, Korea Ceram. Soc., 30(2), 101 (1993)
Hakki BW, Coleman PD, IRE Trans. Microwave Theory Tech., 8, 402 (1960)
Kim BH, Yun YH, Korea Ceram. Soc., 33(12), 1311 (1996)
Kolar D, Gaberscek S, Stadler Z, Suvorov D, Ferroelectrics, 27, 269 (1980)
Ploude JK, Linn DF, O'Bryan HM, Thomson J, J. Am. Ceram. Soc., 58, 418 (1975)
Seo KW, Cho SH, Lee SH, Korean J. Chem. Eng., 18(1), 75 (2001)
Seo KW, Kong HG, Korean J. Chem. Eng., 17(4), 455 (2000)
Seo KW, Oh JK, J. Ceram. Soc. Jpn., 108(8), 691 (2000)
Wu YJ, Chen XM, J. Eur. Ceram. Soc., 19, 1123 (1999)
Wakino K, Minai K, Tamura HJ, Am. Ceram. Soc., 67(4), 278 (1984)
Yamada A, Utsumi Y, Watarai H, Jpn. J. Appl. Phys., 30(9B), 2350 (1991)
Yoon SO, Choi W, Kim KY, Korea Ceram. Soc., 30(2), 101 (1993)
