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Short-range effects and magnetization reversal in Co$_{80}$Fe$_{20}$ thin films: a MOKE magnetometry/domain imaging and AMR study

J. M. Teixeira·R. F. A. Silva·J. Ventura·A. Pereira·J. P. Araujo·M. Amado·F. Carpinteiro·J. B. Sousa·S. Cardoso·R. Ferreira·P. Freitas
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Abstract

A MOKE magnetometry unit simultaneously sensitive to both in-plane magnetization components, based on an intensity differential detection method, allows us to observe the uniaxial anisotropy impressed during CoFe-deposition and to discriminate the magnetization processes under a magnetic field parallel and perpendicular to such axes. Our MOKE imaging unit, using a CCD camera for Kerr effect domain visualization provides direct evidence on the dominant M-processes, namely domain wall motion and moment rotation. Further magnetic information was obtained by AMR measurements due to the dependence of the electrical resistivity on the short-range spin disorder and also on the angle between the electrical current direction (I) and the spontaneous magnetization ($\emph{\textbf{M}}_{S}$).

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J. M. Teixeira, R. F. A. Silva, J. Ventura, A. Pereira, J. P. Araujo, M. Amado, F. Carpinteiro, J. B. Sousa, S. Cardoso, R. Ferreira, P. Freitas. 2006-07-29. Short-range effects and magnetization reversal in Co$_{80}$Fe$_{20}$ thin films: a MOKE magnetometry/domain imaging and AMR study. https://arxiv.org/abs/cond-mat/0507441

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