The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 07, 1992
Filed:
Aug. 24, 1990
John H Tregilgas, Richardson, TX (US);
Dipankar Chandra, Richardson, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
The disclosure relates to a method of forming samples of alloys of group II-VI compositions having minimum dislocations, comprising the steps of providing a sample of a group II-VI compound, providing an enclosed ampoule having the sample at one end portion thereof and a group II element of the compound at an end portion remote from the one end portion, heating the sample to a temperature in the range of 350 to the melting temperature of the compound for about one hour while maintaining the group II element at a temperature more than 200.degree. C. below the sample temperature, heating the group II element to a temperature from about 5.degree. to about 50.degree. C. below the temperature of the sample while maintaining the sample at a temperature in the range of 350.degree. to 650.degree. C. both of about 15 minutes to about 4 hours, and then stoichiometrically annealing the sample at a temperature below 325.degree. C.