Electrical Transport in Ferromagnetic Alloys and Glasses

他们将在很大的薄膜厚度范围内测量镍铁薄膜中磁畴壁和电流之间的s-d交换力。力对壁的尼尔、布洛赫或交叉结结构和电子平均自由程的依赖性将被研究。在镍-铁薄膜或非晶钴-锆薄膜中，布洛赫线在电流诱导的陀螺力影响下的运动将被研究。包含这种移动布洛赫线的墙壁的电流感应运动也将被研究。同样，在钆钴薄膜中，气泡域沿电流方向的横向运动。造成这些现象的陀螺力是由s-d交换相互作用产生的。最后，将寻找在壁矩处理时预测存在于磁畴壁上的直流电压。提出测量的目的是增加对金属铁磁体中由交换和自旋轨道能量介导的电子自由度和磁性自由度之间相互作用的理解。

They will measure the s-d exchange forces between magnetic domain walls and electric currents in nickel-iron thin films, in a large range of film thickness. The dependence of the force on the Neel, Bloch, or cross-tie structure of the wall and on the electron mean free path will be studied. The motion of Bloch lines under the influence of current-induced gyroscopic forces will be investigated, in nickel-iron films or in amorphous cobalt-zirconium films. The current-induced motion of walls containing such mobile Bloch lines will also be studied. Similarly, the motion of bubble domains in directions transverse to a current, in gadolinium-cobalt films. The gyroscopic forces responsible for these phenomena arise from the s-d exchange interaction. Finally, the d.c. voltage, predicted to exist across a magnetic domain wall when the wall moment is precessing, will be looked for. The purpose of the proposed measurements is to increase the understanding of interactions between electronic and magnetic degrees of freedom, mediated by exchange and spin- orbit energies in metallic ferromagnets.