Micromagnetic simulations are used to evaluate the resistance changes of the strips at different applied field values and directions and correlate them with the magnetic domain distribution. The experimentally observed sharp magnetic switching, tailored by the shape anisotropy of the strips, is properly accounted for by numerical simulations when considering a substrate-induced uniaxial magnetic anisotropy. These results are promising for the design of magnetic sensors and other advanced magnetoresistive devices working with perpendicular magnetic fields by using simple structures.
Oxides for new-generation electronics
Tunable Perpendicular Magnetoresistive Sensor Driven by Shape and Substrate Induced Magnetic Anisotropy
Aleix Barrera, Emile Fourneau, Sergi Martín, Josep Maria Batllori, Jordi Alcalá, Lluís Balcells, Narcís Mestres, Ngoc Duy Nguyen, Alvaro Sanchez, Alejandro V. Silhanek, Anna Palau
Adv. Sensor Res., 2: 202370004.