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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | I-Nan Lin Horng-Yi Chan Kuo-Shung Liu |
| Copyright Year | 1996 |
| Description | Author affiliation: Dept. of Mater. Sci. & Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan (I-Nan Lin) |
| Abstract | Sintering behavior and electrical properties of semiconducting oxides, including (Sr/sub 0.2/Ba/sub 0.8/)TiO/sub 3/ (SBT), (Sr/sub 0.4/Pb/sub 0.6/)TiO/sub 3/ (SPT), (Ba/sub 0.7/Pb/sub 0.3/)TiO/sub 3/ (BPT) materials, processed by a microwave sintering technique were examined. Sintering temperature needed in this process is generally /spl sim/150/spl deg/C lower than and soaking time required is generally 80% shorter than those commonly used in the conventional sintering process. For SBT materials, post-annealing after sintering insignificantly modified the samples' microstructure, but substantially alter their resistivity-temperature (/spl rho/-T) characteristics. The re-oxidation which occurred at the grain boundary region is proposed as the mechanism of modification. Unique single high-T/sub c/ behavior and double-T/sub c/ characteristics in /spl rho/-T curve were obtained for as-microwave sintered SPT and BPT materials, respectively. It is attributed to the formation of the "core-shell" microstructure, which, in turn, presumably resulted from the preferential reaction of liquid phase sintering aids, SiO/sub 2/, with the Pb-species. Post-annealing restored the single low-T/sub c/ /spl rho/-T property, that is induced by the homogenization of the microstructure. |
| Starting Page | 987 |
| Ending Page | 990 |
| File Size | 425192 |
| Page Count | 4 |
| File Format | |
| ISBN | 0780333551 |
| DOI | 10.1109/ISAF.1996.598194 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1996-08-18 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Ceramics Electromagnetic heating Semiconductor materials Microstructure Silicon carbide Conducting materials Temperature distribution Semiconductivity Microwave theory and techniques Powders |
| Content Type | Text |
| Resource Type | Article |
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