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:
Nov. 06, 1984
Filed:
Mar. 21, 1984
Applicant:
Inventors:
Herbert F Schaake, Denton, TX (US);
John H Tregilgas, Richardson, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148 203 ; 148-15 ;
Abstract
The dislocation density near the surface of Hg.sub.1-x Cd.sub.x Te alloys is substantially reduced by annealing the material at around 600.degree. C. in a mercury saturated ambient for periods of four hours or more, prior to post annealing at lower temperatures to control the metal vacancy concentration. This procedure allows dislocation reduction by climb, reduces the concentration of metal vacancies which can collapse to form dislocation loops or contribute to dislocation multiplication, and reduces tellurium precipitates which contribute to dislocation multiplication during subsequent post annealing.