Exchange bias and enhanced anisotropy from exchange coupled Fe3C/CoO nanoaggregates

Enhancement of coercivity of self-assembled stacking of ferrimagnetic and antiferromagnetic nanocubes

“…The exchange bias effect generally occurs under the field cooling (FC) conditions. 16,17,[19][20][21][22][23][24] In the present study, however, a horizontal shift of the hysteresis loop is hardly observed for the FM and AFM bilayers (Fig. S12 in the ESI †).…”

“…S10 in the ESI †). 20,25,26 Moreover, the ferromagnetic character of the Co cubes to the ordered arrays of Fe 3 O 4 nanocubes is highly effective for enhancing the magnetic properties.…”

“…1,15 Recently, the coercivity and remanence of ferro-and ferrimagnetic (FM) materials have been found to be controlled by exchange coupling, such as exchange bias effects. [16][17][18][19][20][21][22][23][24][25][26] Since a combination of FM and antiferromagnetic (AFM) materials enhances the coercivity of magnetic nanoparticles and thin films, specific core-shell and layered structures have been designed to improve their magnetic properties. [16][17][18][19][21][22][23][24][25] However, precise control of the lattice constants by adjusting the preparation conditions is required to form suitable interfaces between FM and AFM materials.…”

The exchange bias effects of CoFe2O4@NiO nanofibers fabricated by electrospinning

“…This work is to fabricate nanofibers with core-shell nanostructure, which will enhance the anisotropy at the interface of CoFe 2 O 4 and NiO. The strong coupling between the shell and core is responsible for the origin of exchange bias effect in the NiO nanoparticles [15,16].…”