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. 08, 2022
Filed:
Jun. 29, 2020
United Microelectronics Corp., Hsin-Chu, TW;
Da-Jun Lin, Kaohsiung, TW;
Shih-Wei Su, Tainan, TW;
Bin-Siang Tsai, Changhua County, TW;
Ting-An Chien, Tainan, TW;
UNITED MICROELECTRONICS CORP., Hsin-Chu, TW;
Abstract
A magnetic tunnel junction (MTJ) device includes a bottom electrode, a reference layer, a tunnel barrier layer, a free layer and a top electrode. The bottom electrode and the top electrode are facing each other. The reference layer, the tunnel barrier layer and the free layer are stacked from the bottom electrode to the top electrode, wherein the free layer includes a first ferromagnetic layer, a spacer and a second ferromagnetic layer, wherein the spacer is sandwiched by the first ferromagnetic layer and the second ferromagnetic layer, wherein the spacer includes oxidized spacer sidewall parts, the first ferromagnetic layer includes first oxidized sidewall parts, and the second ferromagnetic layer includes second oxidized sidewall parts. The present invention also provides a method of manufacturing a magnetic tunnel junction (MTJ) device.