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. 30, 2021
Filed:
Aug. 27, 2019
International Business Machines Corporation, Armonk, NY (US);
Bruce B. Doris, Slingerlands, NY (US);
Thitima Suwannasiri, Oak Ridge, NJ (US);
Nathan P. Marchack, New York, NY (US);
Pouya Hashemi, Purchase, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A multilayered bottom electrode for a magnetic tunnel junction (MTJ) containing device is provided that includes, from bottom to top, a base segment having a first diameter and composed of a remaining portion of a first bottom electrode metal-containing layer, a middle segment having a second diameter and composed of a remaining portion of a second bottom electrode metal-containing layer, and an upper segment having a third diameter and composed of a remaining portion of a third bottom electrode metal-containing layer, wherein the first diameter is greater than the second diameter, and the third diameter is equal to, or less than, the second diameter. The wider base segment of each multilayered bottom electrode prevents tilting and/or bowing of the resultant bottom electrode. Thus, a stable bottom electrode is provided.