Patent · US Active

Sensor structure with pinned stabilization layer

US9171559B1 · kind B1 · utility

8Cited by

5References

18Claims

0Family size

Assignee

Seagate Technology LLC · US

Inventors

Konstantin Nikolaev · Edina, US
Taras Pokhil · Arden Hills, US
Andrzej Stankiewicz · Edina, US
Mohammed Sharia Ullah Patwari · Eden Prairie, US
Eric W. Singleton · Pretoria, ZA

Key dates

Filing date	Sep 15, 2014
Grant date	Oct 27, 2015
Priority date	—
Expiry date	Sep 15, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S977/943
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A reader sensor that has a sensor stack with an AFM layer, a pinned stabilization layer, and a pinned layer, with the pinned stabilization layer closer to the AFM layer than to the pinned layer. The stack also includes a non-magnetic spacer layer between and in contact with the pinned stabilization layer and with the pinned layer. A magnetic coupling between the pinned stabilization layer and the pinned layer is no more than 50% of a magnetic coupling between the pinned stabilization layer and the AFM layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.