Zinc oxide crystal and method of producing same

Details Zinc oxide crystal and method of producing same Zinc oxide crystal and method of producing same

1992-11-12

1994-01-18

Langel, Wayne

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C01G 902

Patent

active

052798097

ABSTRACT:
A novel zinc oxide crystal has an octahedral nucleus whose faces are alternately zinc faces and oxide faces, and this crystal has such a geometric shape that a needle is grown on each of the faces. The needle grown on the oxide face is branched into three sections which are disposed in parallel relation, and the needle on the oxide face is shorter than the needle on the zinc face. This novel crystal having oxide films can be produced in a homogeneous manner by mixing zinc-tin alloy powder or tin powder with zinc powder, having an oxide film formed on each particle thereof, to form a powder mixture and then by heating the powder mixture at 820.degree. C. to 1100.degree. C. in an oxidizing atmosphere to oxide the same. The tin concentration in the power mixture is less than 40 wt. %.

REFERENCES:
patent: 5066475 (1991-11-01), Yoshinaka et al.
Motoi Kitano, et al. "Growth of Large Tetrapod-like ZnO Crystals II. Morphological Considerations on Growth Mechanism", Journal of Crystal Growth, vol. 108, No. 1/2, Jan. 11, 1991, Amsterdam NL, pp. 277-284.

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