ACTA

Fast Magnetization Switching in Amorphous Microwires

A. Zhukov^a,b, M. Ipatov^a, J.M. Blanco^c, A. Chizhik^a, A. Talaat^a, V. Zhukova^a
^aDpto. Fisica de Materiales, Facultad de Química, UPV/EHU, 1072, 20018 San Sebastian, Spain
^bIKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
^cDpto. de Física Aplicada, EUPDS, UPV/EHU, 20018, San Sebastian, Spain

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We studied the magnetization switching in magnetically bistable amorphous ferromagnetic microwires. We observed quite fast domain wall propagation along the microwires and a correlation between the magnetoelastic anisotropy, distribution of the local nucleation field along the length of microwire and the domain wall dynamics. We observed that both DW velocity and the range of fields, limiting single DW dynamics, can be manipulated by internal or applied stresses and by annealing. We also observed that under certain conditions a controllable domain wall (DW) collision can be realized in different parts of the wire, and that it is possible to manipulate the DW dynamics in a field-driven regime.

DOI: 10.12693/APhysPolA.126.7
PACS numbers: 75.60.Ej, 75.60.Jk