Method for the preparation of single crystals of gadolinium gall

Details Method for the preparation of single crystals of gadolinium gall Method for the preparation of single crystals of gadolinium gall

1983-04-18

1984-11-20

Bernstein, Hiram H.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156DIG63, C30B 1504

Patent

active

044837348

ABSTRACT:
In the crystal growing of GGG (gadolinium gallium garnet) by the Czochralski technique from a melt of the oxide mixture of gadolinium and gallium, zinc is added to the oxide melt as a dopant element in a limited amount so that the danger of crack formation in the grown single crystals can be greatly decreased contributing to the improvement of the productivity. Moreover, the GGG single crystal grown with zinc doping has remarkably reduced light absorption in the wavelength region of around 300 nm responsible to the yellowish tint of the crystals.

REFERENCES:
patent: 3437432 (1969-04-01), Borchardt
patent: 4199396 (1980-04-01), Brandle et al.
patent: 4302280 (1981-11-01), Bruni
Brandle et al., Jl. of Crystal Growth, vol. 12, No. 1, 1972, pp. 3-8.
Bruni, Crystal, vol. 1, Springer Verlag, N.Y., 1978, pp. 54-56.

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