CoFeBMgO
CoFeBMgO refers to a ferromagnetic heterostructure that combines a cobalt-iron-boron alloy (CoFeB) with a magnesium oxide (MgO) layer. It is most notably used as part of magnetic tunnel junctions in spintronic devices such as magnetoresistive random-access memory (MRAM) and magnetic sensors.
Composition and structure: CoFeB is typically an amorphous alloy whose exact composition varies, commonly in the
Properties: The MgO-based MTJs with CoFeB electrodes exhibit high tunneling magnetoresistance due to symmetry filtering, particularly
Fabrication and applications: CoFeB and MgO stacks are typically deposited by magnetron sputtering and then subjected
Variants and challenges: Variations in CoFeB composition, annealing conditions, and layer thickness affect TMR, PMA strength,