Measurement of magnetization using domain compressibility in CoFeB films with perpendicular anisotropy

Abstract

We present a method to map the saturation magnetization of soft ultrathin films with perpendicular anisotropy, and we illustrate it to assess the compositional dependence of the magnetization of CoFeB(1 nm)/MgO films. The method relies on the measurement of the dipolar repulsion of parallel domain walls that define a linear domain. The film magnetization is linked to the field compressibility of the domain. The method also yields the minimal distance between two walls before their merging, which sets a practical limit to the storage density in spintronic devices using domain walls as storage entities.

References in corpus (4)

• Introduction to half-metallic Heusler alloys: Electronic Structure and Magnetic Properties
• Slater-Pauling Rule and Curie-Temperature of Co${}_2$-based Heusler compounds
• Domain structure in CoFeB thin films with perpendicular magnetic anisotropy
• Magnetic domain structure and dynamics in interacting ferromagnetic stacks with perpendicular anisotropy

Cited by in corpus (6)

• The nature of domain walls in ultrathin ferromagnets revealed by scanning nanomagnetometry
• Measuring the magnetic moment density in patterned ultrathin ferromagnets with submicron resolution
• Direct observation of domain wall surface tension by deflating or inflating a magnetic bubble
• Domain Wall Motion Driven by Laplace Pressure in CoFeB-MgO Nanodots with Perpendicular Anisotropy
• Unveiling the emergent traits of chiral spin textures in magnetic multilayers
• The role of exchange interaction in nitrogen vacancy centre-based magnetometry