A simple approach for characterization of spring-type superlattice magnets using magneto-optical Kerr effect
Materials Letters Elsevier 116 (2014) 143-145
Positive magnetoresistance induced by fan-type phases in a spin-spiral magnet
Physical Review B American Physical Society (APS) 88:22 (2013) 224407
Antiferromagnetism in UO2 thin epitaxial films
Physical Review B American Physical Society (APS) 88:13 (2013) 134426
The antiferromagnetic structures of IrMn3 and their influence on exchange-bias
Scientific Reports Springer Nature 3 (2013) 2412
Abstract:
We have determined the magnetic structures of single-crystal thin-films of IrMn3 for the crystallographic phases of chemically-ordered L12 and for chemically-disordered face-centred-cubic, which is the phase typically chosen for information-storage devices. For the chemically-ordered L12 thin-film, we find the same triangular magnetic structure as reported for the bulk material. We determine the magnetic structure of the chemically-disordered face-centred-cubic alloy for the first time, which differs from theoretical predictions, with magnetic moments tilted away from the crystal diagonals towards the face-planes. We study the influence of these two antiferromagnetic structures on the exchange-bias properties of an epitaxial body-centred-cubic Fe layer showing that magnetization reversal mechanism and bias-field in the ferromagnetic layer is altered significantly. We report a change of reversal mechanism from in-plane nucleation of 90° domain-walls when coupled to the newly reported cubic structure towards a rotational process, including an out-of-plane magnetization component when coupled to the L12 triangular structure.Structure of epitaxial L10-FePt/MgO perpendicular magnetic tunnel junctions
Applied Physics Letters AIP Publishing 102:6 (2013) 062403