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:
Oct. 13, 2020
Filed:
Jul. 01, 2016
MD Tofizur Rahman, Portland, OR (US);
Christopher J. Wiegand, Portland, OR (US);
Brian Maertz, Santa Barbara, CA (US);
Daniel G. Ouellette, Portland, OR (US);
Kaan Oguz, Beaverton, OR (US);
Brian S. Doyle, Portland, OR (US);
Mark L. Doczy, Portland, OR (US);
Daniel B. Bergstrom, Lake Oswego, OR (US);
Justin S. Brockman, Portland, OR (US);
Oleg Golonzka, Beaverton, OR (US);
Tahir Ghani, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
MD Tofizur Rahman, Portland, OR (US);
Christopher J. Wiegand, Portland, OR (US);
Brian Maertz, Santa Barbara, CA (US);
Daniel G. Ouellette, Portland, OR (US);
Kevin P. O'Brien, Portland, OR (US);
Kaan Oguz, Beaverton, OR (US);
Brian S. Doyle, Portland, OR (US);
Mark L. Doczy, Portland, OR (US);
Daniel B. Bergstrom, Lake Oswego, OR (US);
Justin S. Brockman, Portland, OR (US);
Oleg Golonzka, Beaverton, OR (US);
Tahir Ghani, Portland, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Material layer stack structures to provide a magnetic tunnel junction (MTJ) having improved perpendicular magnetic anisotropy (PMA) characteristics. In an embodiment, a free magnetic layer of the material layer stack is disposed between a tunnel barrier layer and a cap layer of magnesium oxide (Mg). The free magnetic layer includes a Cobalt-Iron-Boron (CoFeB) body substantially comprised of a combination of Cobalt atoms, Iron atoms and Boron atoms. A first Boron mass fraction of the CoFeB body is equal to or more than 25% (e.g., equal to or more than 27%) in a first region which adjoins an interface of the free magnetic layer with the tunnel barrier layer. In another embodiment, the first Boron mass fraction is more than a second Boron mass fraction in a second region of the CoFeB body which adjoins an interface of the free magnetic layer with the cap layer.