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Crystals 2014, 4(2), 113-122; doi:10.3390/cryst4020113
Article

Tetragonal-to-Tetragonal Phase Transition in Lead-Free (KxNa1−x)NbO3 (x = 0.11 and 0.17) Crystals

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Received: 13 April 2014; in revised form: 16 May 2014 / Accepted: 16 May 2014 / Published: 10 June 2014
(This article belongs to the Special Issue Piezoelectric Crystals)
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Abstract: Lead free piezoelectric crystals of (KxNa1−x)NbO3 (x = 0.11 and 0.17) have been grown by the modified Bridgman method. The structure and chemical composition of the obtained crystals were determined by X-ray diffraction (XRD) and electron probe microanalysis (EPMA). The domain structure evolution with increasing temperature for (KxNa1−x)NbO3 (x = 0.11 and 0.17) crystals was observed using polarized light microscopy (PLM), where distinguished changes of the domain structures were found to occur at 400 °C and 412 °C respectively, corresponding to the tetragonal to tetragonal phase transition temperatures. Dielectric measurements performed on (K0.11Na0.89)NbO3 crystals exhibited tetragonal to tetragonal and tetragonal to cubic phase transitions temperatures at 405 °C and 496 °C, respectively.
Keywords: lead free piezoelectric crystal; phase transitions; domain structure lead free piezoelectric crystal; phase transitions; domain structure
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Lin, D.; Li, Z.; Li, F.; Cai, C.; Liu, W.; Zhang, S. Tetragonal-to-Tetragonal Phase Transition in Lead-Free (KxNa1−x)NbO3 (x = 0.11 and 0.17) Crystals. Crystals 2014, 4, 113-122.

AMA Style

Lin D, Li Z, Li F, Cai C, Liu W, Zhang S. Tetragonal-to-Tetragonal Phase Transition in Lead-Free (KxNa1−x)NbO3 (x = 0.11 and 0.17) Crystals. Crystals. 2014; 4(2):113-122.

Chicago/Turabian Style

Lin, Dabin; Li, Zhenrong; Li, Fei; Cai, Changlong; Liu, Weiguo; Zhang, Shujun. 2014. "Tetragonal-to-Tetragonal Phase Transition in Lead-Free (KxNa1−x)NbO3 (x = 0.11 and 0.17) Crystals." Crystals 4, no. 2: 113-122.


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