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Electrical properties of (Na0.5K0.5)NbO3-BiTiO3 ceramics with the variation of sintering temperature
- Authors
- Lee, Tae-Ho; Lee, Sung-Gap
- Issue Date
- Nov-2012
- Publisher
- KOREAN ASSOC CRYSTAL GROWTH, INC
- Keywords
- KNK; BTO; Piezoelectric; Dielectric constant
- Citation
- JOURNAL OF CERAMIC PROCESSING RESEARCH, v.13, pp S174 - S176
- Indexed
- SCI
SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF CERAMIC PROCESSING RESEARCH
- Volume
- 13
- Start Page
- S174
- End Page
- S176
- ISSN
- 1229-9162
2672-152X
- Abstract
- Piezoelectric 0.93(Na0.5K0.5)NbO3-0.07BiTiO(3) (NKN-BTO) ceramics were fabricated by the mixed-oxide method and their structural and dielectric properties was investigated with the variation of sintering temperature. All specimens were crystallized in the perovskite single phase without any formation of a second phase such as pyrochlore. The average grain size of the NKN-BTO specimen sintered at 1130 degrees C is 0.32 mu m. The specimen sintered at 1100 degrees C showed the highest relative density of 98%. Electromechanical coupling factor, relative dielectric constant and dielectric loss of the NICN-BTO specimens sintered at 1110 degrees C were 0.31, 1222 and 0.02, respectively. Curie temperature of the specimen sintered at 1110 degrees C was 445 degrees C.
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