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Competing effects of magnetocrystalline anisotropy and exchange bias in epitaxial Fe/IrMn bilayers
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10.1063/1.3561516
/content/aip/journal/apl/98/9/10.1063/1.3561516
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/9/10.1063/1.3561516
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Figures

Image of FIG. 1.
FIG. 1.

XRD measurements, (a) scan and (b) in-plane −scan, of the sample with . (c) Geometry of the field cooling direction, magnetic anisotropies, and the external magnetic field. (d) Definition of the various switching fields between different Fe easy axes.

Image of FIG. 2.
FIG. 2.

Typical longitudinal and transverse MOKE loops measured at various field orientations for three samples with different . Results for 4 nm sample at (a) (square loop), (b) (double-side two-step loop, opposite semicircles), and (c) (double-side two-step loop, opposite semicircles). Results for 5 nm sample at (d) , (e) (asymmetrically shaped loop), and (f) (double-side two-step loop, same semicircle). Results for 6 nm sample at (g) , (h) (double-side two-step loop, same semicircle), and (i) (double-side two-step loop, same semicircle). The orientation of Fe spins in the switching processes is represented by the arrows enclosed in a square.

Image of FIG. 3.
FIG. 3.

Typical field orientation dependence of the experimentally observed switching fields (symbols) and the corresponding theoretical fitting results (curves) for Fe/IrMn bilayers with (a) , (b) , and (c) . The switching fields, represented by different symbols and curves, correspond to the magnetic transitions between different initial and final Fe easy axes orientations. (d) The effective anisotropy fields derived by the above fittings for Fe/IrMn bilayers with different . The dependence of on was fitted (dash curve) by Eq. (9) in Ref. 9.

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/content/aip/journal/apl/98/9/10.1063/1.3561516
2011-03-01
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Competing effects of magnetocrystalline anisotropy and exchange bias in epitaxial Fe/IrMn bilayers
http://aip.metastore.ingenta.com/content/aip/journal/apl/98/9/10.1063/1.3561516
10.1063/1.3561516
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