Patent ID: 9099124
Filing Date: 2015-08-04
Classification: G01R,G11B

Abstract:
1. A tunneling magnetoresistive (TMR) device comprising: a substrate; a first ferromagnetic layer on the substrate; a tunneling barrier layer consisting essentially of MgO on the first ferromagnetic layer; and a second ferromagnetic layer on the tunneling barrier layer; wherein one of said first and second ferromagnetic layers is a free ferromagnetic multilayer having an in-plane magnetization direction substantially free to rotate in the presence of an external magnetic field, the free ferromagnetic multilayer comprising a boron-containing layer and a nitrogen-containing layer between the barrier layer and the boron-containing layer; and wherein the other of said first and second ferromagnetic layers is a reference ferromagnetic layer having an in-plane magnetization direction substantially prevented from rotation in the presence of an external magnetic field.