Piezoelectric and Dielectric Properties of (Ba<sub>1−<i>x</i></sub>Ca<i><sub>x</sub></i>)(Ti<sub>0.95</sub>Zr<sub>0.05</sub>)O<sub>3</sub> Lead‐Free Ceramics

Journal of the American Ceramic Society - Tập 93 Số 10 - Trang 2942-2944 - 2010
Wei Li1, Zhijun Xu1, Ruiqing Chu1, Peng Fu1, Guo‐Zhong Zang1
1College of Materials Science and Engineering, Liaocheng University, Liaocheng 252059, China

Tóm tắt

Lead‐free (Ba1−xCax)(Ti0.95Zr0.05)O3 (x=0.02–0.20) ceramics were prepared successfully using a solid‐state reaction technique. The polymorphic phase transitions from orthorhombic to tetragonal phase around room temperature were identified in the composition range of 0.06<x<0.10. A high piezoelectric coefficient of d33=365 pC/N and high planar electromechanical coupling factor of kp=48.5% were obtained for the sample of x=0.08. With the doping of Ca content, the orthorhombic–tetragonal phase transition point shifted toward room temperature while the relative high Curie temperature (Tc) was still maintained about 110°C.

Từ khóa


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Thông tin xuất bản

Journal of the American Ceramic Society

Tập 93 Số 10

2942-2944

Thông tin tác giả