Giant exchange bias in a single-phase magnet with two magnetic sublattices

Abstract

Exchange bias phenomenon is generally ascribed to the exchange coupling at the interfaces between ferromagnetic and antiferromagnetic layers. Here, we propose a bulk form of exchange bias in a single-phase magnet where the coupling between two magnetic sublattices induces a significant shift of the coercive field after a field cooling. Our experiments in a complicated magnet YbFe2O4 demonstrate a giant exchange bias at low temperature when the coupling between the Yb3+ and Fe2+/Fe3+ sublattices take places. The cooling magnetic field dependence and the training effect of exchange bias are consistent with our model. In strong contrast to conventional interfacial exchange bias, this bulk form of exchange bias can be huge, reaching the order of a few Tesla.

17 pages, 6 figures

References in corpus (3)

• Exchange bias effect in alloys and compounds
• Three Dimensional Magnetic Correlations in Multiferroic LuFe2O4
• Electrical Control of Magnetization in Charge-ordered Multiferroic LuFe2O4

Cited by in corpus (4)

• Giant zero field cooled spontaneous exchange bias effect in phase separated La1.5Sr0.5CoMnO6
• Giant spontaneous exchange bias in an antiperovskite structure driven by a canted triangular magnetic structure
• Enhancement of exchange bias in ferromagnetic/antiferromagnetic core-shell nanoparticles through ferromagnetic domain wall formation
• Tunable giant exchange bias in single-phase rare earth-transition metal intermetallics YMn12-xFex with highly homogenous inter-sublattice exchange coupling