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:
Feb. 18, 1997
Filed:
Feb. 23, 1995
Mark R Visokay, Stanford, CA (US);
Bruce M Lairson, Houston, TX (US);
Robert Sinclair, Palo Alto, CA (US);
Board of Trustees of the Stanford Leland Junior University, Stanford, CA (US);
Abstract
A method for making oriented thin films of a ternary intermetallic compound and such films having a tetragonal structure and generally uniaxial magnetic, optical, electronic, and mechanical properties, as well as a generally lower Curie temperature than oriented binary intermetallic films. The steps of the method involve selecting a substrate material for biasing the orientation of the ternary intermetallic compound and exhibiting no chemical reactiveness to the ternary intermetallic compound. Preferably, such substrate is a single crystal, such as MgO or Al.sub.2 O.sub.3, or an amorphous material such as pure SiO.sub.2, amorphous carbon, or glass. In a second step the substrate is heated to a temperature above 450.degree. C. and then, a first metal, a second metal, and a third metal are simultaneously deposited on the substrate material. The first metal and second metal are selected from among metals pairs including CoNi, CoFe, FeNi, and the third metal is selected from the group of metals consisting of Pd and Pt. The thin film formed is a ternary intermetallic compound exhibiting an L1.sub.0 crystal structure and the desired uniaxial properties. The method of the invention allows one to accurately control the relative amounts of the three metals.