US Patent Issued to Headway Technologies on Jan. 28 for "Reader noise reduction using spin hall effects" (California Inventors)

ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,211,525, issued on Jan. 28, was assigned to Headway Technologies Inc. (Milpitas, Calif.).

"Reader noise reduction using spin hall effects" was invented by Wenyu Chen (San Jose, Calif.) and Yan Wu (Cupertino, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A read head is disclosed wherein a Spin Hall Effect (SHE) layer is formed on a free layer (FL) in a sensor and between the FL and top shield (S2). Preferably, the sensor has a seed layer, an AP2 reference layer, antiferromagnetic coupling layer, AP1 reference layer, and a tunnel barrier sequentially formed on a bottom shield (S1). When the stripe heights of the FL and SHE layer are equal, a two t...