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:
Mar. 25, 2014
Filed:
Apr. 15, 2013
Seagate Technology Llc, Cupertino, CA (US);
Yuankai Zheng, Bloomington, MN (US);
Dimitar V. Dimitrov, Edina, MN (US);
Dexin Wang, Eden Prairie, MN (US);
Haiwen Xi, Prior Lake, MN (US);
Kaizhong Gao, Eden Prairie, MN (US);
Olle Heinonen, Eden Prairie, MN (US);
Wenzhong Zhu, Apple Valley, MN (US);
Seagate Technology LLC, Cupertino, CA (US);
Abstract
Spin-transfer torque memory includes a composite free magnetic element, a reference magnetic element having a magnetization orientation that is pinned in a reference direction, and an electrically insulating and non-magnetic tunneling barrier layer separating the composite free magnetic element from the magnetic reference element. The free magnetic element includes a hard magnetic layer exchanged coupled to a soft magnetic layer. The composite free magnetic element has a magnetization orientation that can change direction due to spin-torque transfer when a write current passes through the spin-transfer torque memory unit.