Electrical Properties and Polarization Reversal in (Li,Na)NbO3 Lead-Free Piezoelectric Ceramics

Abstract:

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In this study, the relationships between the electrical properties and polarization switching of lead-free (Li0.06Na0.94)NbO3 (LNN6) ceramics were investigated. The electrical properties of stoichiometric LNN6 did not change with polarization switching. On the other hand, the frequency dependence of the impedance of Na-deficient LNN decreased with polarization switching, and the coupling factor kp, the piezoelecric constant d33 and the dielectric constant ε33T/ε0 decreased with polarization switching. Moreover, the dielectric curve of Na-deficient LNN6 after 10 switchings showed peaks at approximately 330, 400 and 500 °C

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Periodical:

Edited by:

Chazono Hirokazu, Fujihara Shinobu, Katayama Keiichi, Masumoto Hiroshi, Mizoguchi Teruyasu, Osada Minoru, Shinozaki Kazuo and Takeda Hiroaki

Pages:

69-72

DOI:

10.4028/www.scientific.net/KEM.485.69

Citation:

T. Ohashi et al., "Electrical Properties and Polarization Reversal in (Li,Na)NbO3 Lead-Free Piezoelectric Ceramics", Key Engineering Materials, Vol. 485, pp. 69-72, 2011

Online since:

July 2011

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$35.00

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