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http://dx.doi.org/10.4313/JKEM.2003.16.1.033

The Effect of Nb2O5 Addition on Properties of PZT Ceramics Prepared by Partial Oxalate Method  

김태주 (영남대학교 전자공학과)
남효덕 (영남대학교 전자공학과)
이준형 (경북대학교 무기재료공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.16, no.1, 2003 , pp. 33-38 More about this Journal
Abstract
Highly homogeneous PZT powder was prepared by a partial oxalate method using chemicals of (Z $r_{0.53}$ $Ti_{0.47}$) $O_2$, Pb(N $o_3$)$_2$and (COOH)$_2$ㆍ2$H_2O$. N $b_2$ $O_{5}$ addition effect on microstructure and electrical properties of PZT ceramics was investigated. When the precursors were calcined at 71$0^{\circ}C$, a single perovskite phase was obtained. After sintering at 110$0^{\circ}C$, X-ray diffraction Patterns showed coexistence of rhombohedral and tetragonal phases regardless of the N $b_2$ $O_{5}$ content. As the content of N $b_2$ $O_{5}$ increased, grain size decreased but sintered density increased. The electromechanical coupling factor of kp and the piezoelectric constant of $d_{31}$ increased linearly with the content of N $b_2$ $O_{5}$, and those values reached 0.7 and -200, respectively, when 1.2 mol% of N $b_2$ $O_{5}$ is added. is added.ded.
Keywords
PZT; Partial oxalate method; N $b_2$ $O_{5}$ Additive Effect; Microstructure; Electrical property;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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