A 90° ferromagnetic layer coupling in FM/AFM/FM structures

Role of the Antiferromagnetic Bulk Spin Structure on Exchange Bias

“…On the contrary, the domain state model [9] considers the entire volume of the AF in order to account for EB, suggesting that the internal magnetic structure of the AF is crucial for the emergence of EB. Several techniques have been applied to study AF domains [10][11][12], and 90 or 180 domain walls were claimed for different systems [13][14][15][16][17][18][19][20]. Although recent experiments [21,22] suggest that the bulk AF sets the EB, whether EB is purely controlled by the interface or AF bulk is still controversial.…”

Thermal gating of magnon exchange in magnetic multilayers with antiferromagnetic spacers

“…The Py(5) layer and the [Fe(6)/Py(3)] bilayer are the soft and hard ferromagnetic layers, respectively (hereafter Py and FePy). The Py(3) sub-layer was used to promote the growth of the FeMn layer with the desirable AF properties [35,36] as well as to make the two F/AF interfaces compositionally identical. Since the properties of an antiferromagnet strongly depend on finite-size effects [37], we fabricated a series of trilayers with different thicknesses of the FeMn spacer (t = 4-15 nm).…”