標題: Sintering behaviors and dielectric properties of nanocrystalline barium titanate
作者: Ying, Kuo-Liang
Hsieh, T.-E.
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: nano-BaTiO3;sintering;dielectric properties
公開日期: 15-四月-2007
摘要: Nanometer-scale barium titanate (BaTiO3) Powders were prepared via a process consisting of chemical dispersion and physical grinding/mixing. Sintering behaviors, microstructures as well as their correlations to dielectric properties of nano-BaTiO3 sintered at the temperatures ranging from 1100 to 1300 degrees C for various time spans were investigated. It was found that specific control on sintering condition is required for the nano-BaTiO3 powders to achieve desired microstructure, crystalline phase and dielectric properties of devices. The BaTiO3 sample sintered at 1100 degrees C for 6 h possesses relatively small grain sizes (about 140 nm), high density (about 95% T.D.) and distinct room-temperature dielectric properties (dielectric constant = 8000; dielectric loss = 5 x 10(-3)). Hence, in addition to the saving of thermal budget, the adoption of nano-scale ceramic powders in conjunction with appropriate sintering process may dramatically improve the dielectric properties of devices. (C) 2007 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.mseb.2007.01.002
http://hdl.handle.net/11536/10905
ISSN: 0921-5107
DOI: 10.1016/j.mseb.2007.01.002
期刊: MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
Volume: 138
Issue: 3
起始頁: 241
結束頁: 245
顯示於類別:期刊論文


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