Volume 215, Issue 20 1700942
Original Paper

Electromechanical Properties of Lead-Free Nb-Doped 0.95Bi0.5Na0.5TiO3-0.05BaZrO3 Piezoelectric Ceramics

Ali Hussain

Ali Hussain

Department of Materials Science and Engineering, Institute of Space Technology, Islamabad 44000, Pakistan

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Adnan Maqbool

Adnan Maqbool

Department of Metallurgical and Materials Engineering, University of Engineering Technology, Lahore, Pakistan

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Rizwan Ahmed Malik

Rizwan Ahmed Malik

School of Advanced Materials Engineering, Changwon National University, Gyeongnam 641-773, Republic of Korea

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Ibrahim Qazi

Ibrahim Qazi

Department of Materials Science and Engineering, Institute of Space Technology, Islamabad 44000, Pakistan

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Tae-Kwon Song

Tae-Kwon Song

School of Advanced Materials Engineering, Changwon National University, Gyeongnam 641-773, Republic of Korea

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Won-Jeong Kim

Won-Jeong Kim

Department of Physics, Changwon National University, Gyeongnam 641-773, Republic of Korea

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Myong-Ho Kim

Corresponding Author

Myong-Ho Kim

School of Advanced Materials Engineering, Changwon National University, Gyeongnam 641-773, Republic of Korea

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First published: 14 February 2018
Citations: 17

Abstract

Lead-free piezoelectric 0.95(Bi0.5Na0.5Ti1−xNbx)O3-0.05BaZrO3 (BNTN-BZ5) ceramics (with x = 0–0.02) are synthesized by a conventional mixed oxide route. The crystalline phase, microstructure and electromechanical properties of the BNTN-BZ5 are investigated as a function of different Nb content. X-ray diffraction analysis shows the formation of single phase perovskite structure for all samples. The polarization response decrease while the dielectric and field-induced strain response increase when a small amount (x = 0.005) of Nb is incorporated in 0.95(Bi0.5Na0.5Ti)O3-0.05BaZrO3 (BNT-BZ5). An enhanced field-induced strain (Smax = 0.37%) with a corresponding dynamic piezoelectric coefficient (d*33) of 542 pm V−1 is observed for x = 0.005 at an applied electric field of 7 kV mm−1.

Conflict of Interest

The authors declare no conflict of interest.

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