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Crystal Growth of Ca3(Li,Nb,Ga)5O12 Garnets from Melt

Published online by Cambridge University Press:  15 February 2011

V. l. Chani ,
Y. Myu ,
K. Shimamura ,
Y. Saiki  and
T. Fukuda
V. l. Chani
Affiliation:
Institute for Materials Research, Tohoku Univ., 2–1–1 Katahira, Aoba-ku, Sendai, 980, Japan
Y. Myu
Affiliation:
Korea Research Institute of Chem. Technology, 100 Jang-dong, Yuseoung-ku, Taejon, Korea
K. Shimamura
Affiliation:
Institute for Materials Research, Tohoku Univ., 2–1–1 Katahira, Aoba-ku, Sendai, 980, Japan
Y. Saiki
Affiliation:
Institute for Materials Research, Tohoku Univ., 2–1–1 Katahira, Aoba-ku, Sendai, 980, Japan
T. Fukuda
Affiliation:
Institute for Materials Research, Tohoku Univ., 2–1–1 Katahira, Aoba-ku, Sendai, 980, Japan
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Abstract

Single crystals of Ca3(Li,Nb,Ga)5O12 garnets have been grown from stoichiometric melts by micro-pulling down and Czochralski methods using Pt crucibles. It was found that the mixture of oxides with atomic ratio Ca : Li : Nb : Ga = 3 : 0.275 : 1.775 : 2.95 correspond to the garnet composition which melts congruenlly at about 1450°C. Solid state reaction data of the compounds related with this material are also reported. Lattice parameter of all Ca3(Li,Nb,Ga)5O12 crystals grown was about 1.254 nm. Transparent and bubble-free crystals of Ca3LixNb1.5+xGa(3.5+x)Ga(3.5−2x)O12 (x = 0.25 and 0.275) were grown by Czochralski technique in air. An optical transmission spectrum of the crystals was studied. No absorption was detected in 400–1200 nm wavelength range.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 453: Symposium R – Solid State Chemistry of Inorganic Materials , 1996 , 283
Copyright
Copyright © Materials Research Society 1997

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References

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