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:
May. 31, 2022
Filed:
Feb. 13, 2021
Avalanche Technology, Inc., Fremont, CA (US);
Zihui Wang, Mountain View, CA (US);
Yiming Huai, Pleasanton, CA (US);
Avalanche Technology, Inc., Fremont, CA (US);
Abstract
The present invention is directed to a perpendicular magnetic structure comprising a first seed layer including tantalum, a second seed layer deposited on top of the first seed layer and including iridium, a third seed layer deposited on top of the second seed layer, and a fourth seed layer deposited on top of the third seed layer and including chromium. The third seed layer includes one of NiFe, NiFeB, NiFeCr, CoFeB, CoFeTa, CoFeW, CoFeMo, CoFeTaB, CoFeWB, or CoFeMoB. The perpendicular magnetic structure further includes a magnetic fixed layer structure formed on top of the fourth seed layer and having an invariable magnetization direction substantially perpendicular to a layer plane of the magnetic fixed layer structure. The magnetic fixed layer structure includes layers of a magnetic material interleaved with layers of a transition metal. The magnetic material includes cobalt. The transition metal includes one of nickel, platinum, palladium, or iridium.