Process for producing a strain-free monocrystal of a crystalline

Details Process for producing a strain-free monocrystal of a crystalline Process for producing a strain-free monocrystal of a crystalline

1983-04-28

1986-11-18

Bernstein, Hiram H.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156617SP, 156DIG71, 156DIG73, C30B 102

Patent

active

046234233

ABSTRACT:
The process involves producing a monocrystal from the ferroelectric compound, annealing the monocrystal and cooling the latter in a zero longitudinal temperature gradient. The apparatus comprises means for producing the monocrystal and heating means for annealing the monocrystal in a zero temperature gradient, as well as for cooling the monocrystal in a zero longitudinal temperature gradient after annealing. The strain-free monocrystals may be used in the production of surface wave filters, modulators and optical amplifiers.

REFERENCES:
patent: 3384449 (1968-05-01), Auloin et al.
patent: 3488157 (1970-01-01), Koffer
Ciszek, IBM Technical Disclosure Bulletin, vol. 17, No. 2, 7/74.
Chemical Abstracts, vol. 72, 1970, 25903w.
Caumo et al., Jl. of Crystal Growth, 33(1976), 8-10.
Schmidt et al., Nat. Res. Bull., vol. 6, No. 8, 771-74, 1971.

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