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:
Sep. 03, 2002
Filed:
Jan. 25, 2000
Applicant:
Inventors:
Chuhee Kwon, Long Beach, CA (US);
Quanxi Jia, Los Alamos, NM (US);
Assignee:
The United States of America, as represented by the Department of Energy, Washington, DC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/902 ;
U.S. Cl.
CPC ...
H01L 2/902 ;
Abstract
The fabrication of ferromagnet-insulator-ferromagnet magnetic tunneling junction devices using a ramp-edge geometry based on, e.g., (La Sr ) MnO , ferromagnetic electrodes and a SrTiO insulator is disclosed. The maximum junction magnetoresistance (JMR) as large as 23% was observed below 300 Oe at low temperatures (T<100 K). These ramp-edge junctions exhibited JMR of 6% at 200 K with a field less than 100 Oe.