Preparation and electrical properties of the new lead-free (1 − x)Bi_0.5Na_0.5TiO₃–xBa(Ni_1/3Nb_2/3)O₃ piezoelectric ceramics

Journal Article · Thu Jan 01 04:00:00 EST 2015 · Journal of the Ceramic Society of Japan

DOI:https://doi.org/10.2109/jcersj2.123.1038· OSTI ID:1353240

PAN, Zhao ^[1]; AN, Mingjie ^[1]; CHEN, Jun ^[2]; FAN, Longlong ^[1]; LIU, Laijun ^[3]; FANG, Liang ^[3]; XING, Xianran ^[2]

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1. Department of Physical Chemistry, University of Science and Technology Beijing
2. Department of Physical Chemistry, University of Science and Technology Beijing; State Key Laboratory for Advanced Metallurgy, University of Science and Technology Beijing
3. Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, Guilin University of Technology

A new lead-free piezoelectric ceramics of (1 - x)Bi_0.5Na_0.5TiO_3–xBa(Ni_1/3Nb_2/3)O₃ (BNT–BNN) (x = 0.0–0.07) have been prepared by a conventional solid reaction method. Their structures and electric properties have been investigated systematically. A pure perovskite phase can be formed in x ≤ 0.06. By the introduction of Ba(Ni_1/3Nb_2/3)O₃, the ceramics exhibit a lower coercive field EC. Composition for x = 0.02 shows optimal piezoelectric properties, with the piezoelectric coefficient d₃₃ = 121 pC/N. Temperature dependent P(E) loops and S(E) curves of 0.98BNT–0.02BNN indicate that the phase transition from the ferroelectric to antiferroelectric takes place over a very wide temperature range from 75 to 150°C.

• Research Organization: Advanced Photon Source (APS), Argonne National Laboratory (ANL), Argonne, IL (US)
• Sponsoring Organization: USDOE Office of Science (SC)
• OSTI ID: 1353240
• Journal Information: Journal of the Ceramic Society of Japan, Journal Name: Journal of the Ceramic Society of Japan Journal Issue: 1443 Vol. 123; ISSN 1882-0743
• Country of Publication: United States
• Language: ENGLISH

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36 MATERIALS SCIENCE