Low temperature sintering and piezoelectric properties of 0.6Pb(Zr sub(1-x)Ti sub(x))O sub(3)-0.4Pb(Zn sub(1/6)Ni sub(1 /6)Nb1 sub(/3))O sub(3) ceramics

The structural change of 0.6Pb(Zr sub(1-x)Ti sub(x)) O sub(3)-0.4Pb(Zn sub(1/6)Ni sub(1/6)Nb sub(2/3))O sub(3) (PZT sub(x)-PZNN) from rhombohedral to tetragonal is significantly dependent on the ratio of Ti/Zr. PZT sub(0.570)-PZNN ceramics exhibit the highest piezoelectric properties (d sub(33)=661...

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Bibliographic Details
Published in:Journal of electroceramics 2014-10, Vol.33 (1-2), p.64-68
Main Authors: Han, Seung Ho, Cho, Yu Ri, Park, Hwi-Yeol, Park, Geun Jun, Kang, Hyung-Won, Lee, Hyeung-Gyu
Format: Article
Language:English
Subjects:
Actuators
Ceramics
Electrodes
Multilayers
Optimization
Piezoelectricity
Sintering
Titanium
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Summary:The structural change of 0.6Pb(Zr sub(1-x)Ti sub(x)) O sub(3)-0.4Pb(Zn sub(1/6)Ni sub(1/6)Nb sub(2/3))O sub(3) (PZT sub(x)-PZNN) from rhombohedral to tetragonal is significantly dependent on the ratio of Ti/Zr. PZT sub(0.570)-PZNN ceramics exhibit the highest piezoelectric properties (d sub(33)=661 pC/N, k sub(p)=0.68, and epsilon sub(33) super( T)/ epsilon sub(0)=3928) as a result of the MPB formation. However, the optimum sintering temperature of this composition is approximately 1200 degree C, which restricts the use of pure, cheap metal electrodes in the fabrication of multilayer ceramic actuators. In this study, a low temperature sintering of PZT sub(0.570)-PZNN ceramics with the addition of CuO is reported. It is found that the addition of CuO can significantly reduce the sintering temperature to 900 degree C. The piezoelectric properties of the 2 mol% CuO-added PZT sub(0.570)-PZNN sintered at 900 degree C are d sub(33)=602 pC/N, k sub(p)=0.65, epsilon sub(33) super(T)/ epsilon sub(0)=3570, and T sub(C)=251 degree C.
ISSN:1385-3449
1573-8663
DOI:10.1007/s10832-014-9918-0