Journal of Crystal Growth, Vol.262, No.1-4, 40-47, 2004
Growth of La3-xBaxTa0.5+x/2Ga5.5-x/2O14 compounds for the high-temperature piezoelectric applications
Alkali-earth ion (Ba2+) substituted La3Ta0.5Ga5.5O14 (LTG) crystals with a chemical formula of La3-xBax Ta0.5+x/2Ga5.5-x/2O14 (LBTG), suitable for piezoelectric applications, were grown by the micro-pulling-down (mu-PD) and Czochralski technique. Powder X-ray diffraction analysis had been shown that Ba2+ could be substituted for La3+ up to x = 0.2 in LTG crystals. A structure analysis revealed that Ba atoms are mainly distributed in decahedral sites occupied by La atoms. Grown LBTG crystals showed higher value of d(14) and K-12 than LTG. (C) 2003 Elsevier B.V. All rights reserved.