Nucleation of magnetization reversal in individual nanosized nickel wires

2019-10-10 11:02:55

switching field diameters magnetization reversal

责任者: Wemsdorfer, W.;Doudin, B.;Mailly, D.;Hasselbach, K.;Benoit, A.;Meier, J.;Ansermet, J.-P.;Barbara, B. 单位: Centre de Recherches sur les Tres Basses Temp., CNRS, Grenoble, France 来源出处: Physical Review Letters(Phys. Rev. Lett. (USA)),1996/08/26,77(9):1873-6 摘要: The switching of the magnetization of single Ni wires with diameters 40-100 nm was measured at temperatures between 0.13 and 6 K. The angular dependence of the switching field was studied for several wire diameters. Repetitive measurements allow us to obtain histograms of the switching field values. For the smallest diameters, the measurements of the probability of reversal revealed a thermally activated switching following an Arrhenius law with an activation volume much smaller than the volume of the wire 关键词: ferromagnetic materials;magnetic particles;magnetisation reversal;nanostructured materials;nickel;magnetization reversal nucleation;individual nanosized Ni wires;magnetization switching;angular dependence;switching field;reversal probability;thermally activated switching;Arrhenius law;activation volume;0.13 to 6 K;Ni