Process for making beta-zinc diphosphide monocrystals (whiskers)

Details Process for making beta-zinc diphosphide monocrystals (whiskers) Process for making beta-zinc diphosphide monocrystals (whiskers)

1986-08-25

1987-09-08

Dixon, Jr., William R.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156DIG70, 156DIG77, 156DIG112, C30B 2300

Patent

active

046922032

ABSTRACT:
.beta.-zinc diphosphide monocrystals (.beta.-ZnP.sub.2) (whiskers) having a diameter of at least 7 mm are made. To this end, a quartz ampoule is filled up to 70-90% its volume with polycrystalline .beta.-ZnP.sub.2 ; the ampoule is sealed and drawn in upright position at a velocity of 0.5-2.5 mm/day during a period of 24-120 days through a kiln; the temperature outline from below to above in the kiln is defined by a lower inlet temperature of 580.degree.-780.degree. C., a mean maximum temperature of 800.degree.-950.degree. C. and an upper outlet temperature of 350.degree.-400.degree. C.; the ampoule coming from the furnace is crushed and .beta.-ZnP.sub.2 condensed into a monocrystal via the gas phase by sublimation into the upper ampoule portion is removed.

REFERENCES:
patent: 3033659 (1959-04-01), Fischer
patent: 3210149 (1962-03-01), Eland
Gorban et al., "Electrical Properties of ZnP.sub.2 Single Crystals . . . " Phys. Status Solidi A, 48(2), 329-334, 1978.
Mowles, T., "Synthesis of Monoclinic ZnP.sub.2 Single Crystals", Report 1978, LBL-7661, 68 pages.
Piper, W., "Growth of Zinc Sulfide Crystals", J. Chem. Phys., vol. 20, p. 1343, 1952.
Kuo et al., "Growth and Structure of Zinc Diphosphide Crystals", Ch'eng-Kung Ta Hsueh Hsueh Pao, K'o Chi Pien, 17, 7-11.

Affiliated with

Also associated with

Rating

Process for making beta-zinc diphosphide monocrystals (whiskers) does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for making beta-zinc diphosphide monocrystals (whiskers), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making beta-zinc diphosphide monocrystals (whiskers) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2156483