Angle and rotational direction dependent horizontal loop shift in epitaxial Co/CoO bilayers on MgO(100) | Zendy

Andrea Ehrmann | Zendy; Tomasz Bƚachowicz | Zendy

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Angle and rotational direction dependent horizontal loop shift in epitaxial Co/CoO bilayers on MgO(100)

Author(s) -

Andrea Ehrmann,

Tomasz Bƚachowicz

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4985032

Subject(s) - condensed matter physics , magnetization , exchange bias , antiferromagnetism , kerr effect , epitaxy , materials science , orientation (vector space) , transverse plane , field (mathematics) , magneto optic kerr effect , magnetic field , magnetic anisotropy , physics , nanotechnology , geometry , mathematics , layer (electronics) , quantum mechanics , nonlinear system , structural engineering , pure mathematics , engineering

Co/CoO belongs to the typical exchange bias systems which have been investigated for decades. Surprisingly, Co/CoO thin film systems epitaxially grown on MgO(100) substrates show a strong influence of the relative orientation of the average uncompensated antiferromagnetic magnetization with respect to the cooling field direction, giving rise to unexpected asymmetric angular dependencies of the horizontal loop shift as well as the sign of the transverse magnetization peaks in magneto-optical Kerr effect (MOKE) experiments. In this paper, we provide a broad overview of the influence of cooling field orientation and sample orientation on magnetization reversal processes in this system

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