| 수열합성법에 의해 제조된 PZT의 특성에 미치는 Sr의 영향 |
| 양범석, 신창윤, 원창환 |
| 충남대학교 급속응고신소재연구소 |
| Effects of Sr on the Characteristics of PZT Ceramics Prepared by Hydrothermal Process |
| Beom-Seok Yang, Chang-Yun Shin, Chang-Whan Won |
| Engineering Research Center for Rapidly Solidified Materials, Chungnam National University |
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| ABSTRACT |
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The sintering and electrical properties of the hydrothermal PSZT powders obtained by substituting 4, 6 and 8mol% Sr for Pb in PZT lattice structure were investigated. The lattice constant and particle size decreased in proportion to a quantity of Sr. The sintering properties of PSZT powders showed $7.754g/cm^3$ of sintered density and $4{mu}m$ of grain size at sintering temperature of $1250^{circ}C$. Curie temperature lowered gradually from $363.6^{circ}C;to;319.2^{circ}C$ and relative dielectric constants increased rapidly by a quantity of Sr. In comparison to PZT, moreover, the quality factor of PSZT was increased more than three times with increase of Sr mole ratio, and piezoelectric constant $(d_{31};and;g_{31})$ was decreased. It was found that dielectric loss of PSZT was decreased by 0.574% which was half of PZT. |
| Key words:
Pb$(Zr_{0.52}Ti_{0.48})O_3$, Hydrothermal process, piezoelectric element, PSZT |
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