Crystal Growth and High Temperature Piezoelectricity of La sub(3)Ta sub(0.5)Ga sub(5.5-x)Al sub(x) O sub(14) Crystals

For the application of high temperature piezoelectric devices, Al super(3+) substituted La sub(3)Ta sub(0.5)Ga sub(5.5)O sub(14) (LTG) crystals with chemical formula of La sub(3)Ta sub(0.5)Ga sub(5.5-x)Al sub(x)O sub(14) (LTGA) were synthesized and grown by mu -PD (Micro-pulling-down) and Czochralsk...

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Bibliographic Details
Published in:Journal of electroceramics 2004-07, Vol.13 (1-3), p.471-478
Main Authors: Jung, Il Hyoung, Fukuda, Tsuguo, Auh, Keun Ho
Format: Article
Language:English
Subjects:
Ceramics
Crystal growth
Crystals
Melting
Melts
Piezoelectricity
Stability
Unity
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Summary:For the application of high temperature piezoelectric devices, Al super(3+) substituted La sub(3)Ta sub(0.5)Ga sub(5.5)O sub(14) (LTG) crystals with chemical formula of La sub(3)Ta sub(0.5)Ga sub(5.5-x)Al sub(x)O sub(14) (LTGA) were synthesized and grown by mu -PD (Micro-pulling-down) and Czochralski technique. LTGA compound has been shown to exhibit congruent melting in a wide compositional range without destabilization of the melt during growth, while distribution coefficient of the substituted Al super(3+) ion was close to unity. LTGA crystals have shown preferable effects for temperature stability on piezoelectric properties in the range from R.T (room temperature) to 500_C.
ISSN:1385-3449
1573-8663
DOI:10.1007/s10832-004-5144-5