Time resolved scanning Kerr microscopy of hard disk writer structures with a multilayered yoke

Yu, W; Gangmei, P; Keatley, PS; et al.Hicken, RJ; Gubbins, MA; Czoschke, PJ; Lopusnik, R
Date: 24 April 2013
Journal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Publisher DOI
https://doi.org/10.1063/1.4802977
Related links
http://hdl.handle.net/10871/21966
Abstract
Partially built hard disk writer structures with a multilayered yoke formed from 4 repeats of a NiFe(∼1 nm)/CoFe(50 nm) bilayer were studied by time and vector resolved scanning Kerr microscopy. Dynamic images of the in-plane magnetization suggest an underlying closure domain equilibrium state. This state is found to be modified by ...
Partially built hard disk writer structures with a multilayered yoke formed from 4 repeats of a NiFe(∼1 nm)/CoFe(50 nm) bilayer were studied by time and vector resolved scanning Kerr microscopy. Dynamic images of the in-plane magnetization suggest an underlying closure domain equilibrium state. This state is found to be modified by application of a bias magnetic field and also during pulse cycling, leading to different magnetization rotation and relaxation behavior within the tip region. © 2013 AIP Publishing LLC.
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Physics and Astronomy

Faculty of Environment, Science and Economy

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