Magnetic tunnel junction sensor with Co/Pt perpendicular anisotropy ferromagnetic layer...

Linear magnetoresistance (MR) is an important attribute for magnetic sensor designs for space applications, three dimensional detection of the magnetic field, and high field measurements. Here we demonstrate that a large linear MR of up to 22% can be achieved in a magnetic tunnel junction that consists of two ferromagnetic layers, one with out of plane and one with in plane magnetic anisotropy. The tunnelling magnetoresistance (TMR) is measured with the electrical current perpendicular to the film plane. The magnetic configuration of the device is analyzed.