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Effect of Mg interlayer on perpendicular magnetic anisotropy of CoFeB films in MgO/Mg/CoFeB/Ta structure
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10.1063/1.4754118
/content/aip/journal/apl/101/12/10.1063/1.4754118
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/12/10.1063/1.4754118
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

In-plane and perpendicular M(H) loops of Ta (5.0)/Mg (0.4)/MgO (2.2)/Mg (1.2)/Ta (1.0) (in nm) multilayers annealed at . The Mg thickness was varied as (a), 0.2 nm (b), 0.4 nm (c), 0.6 nm (d), 0.8 nm (e), and 1.0 nm (f). The inset figures in (a)-(e) show the enlarged perpendicular M(H) loops.

Image of FIG. 2.
FIG. 2.

(a) and (b) show the diagram of squareness (SQ) and of thin CoFeB films in the direction perpendicular to film as a function of Mg thickness () and annealing temperature ().

Image of FIG. 3.
FIG. 3.

Interfacial anisotropy of CoFeB films as a function of Mg insertion thickness () for different (in log scale). The inset shows the values obtained from VSM and FMR for samples annealed at .

Image of FIG. 4.
FIG. 4.

(a) FMR differential absorption spectrum, (b) the dependence of , and (c) effective damping constant of MgO/Mg/CoFeB/Ta films with annealed at . (d) The minimum effective damping constant as a function of .

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/content/aip/journal/apl/101/12/10.1063/1.4754118
2012-09-21
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effect of Mg interlayer on perpendicular magnetic anisotropy of CoFeB films in MgO/Mg/CoFeB/Ta structure
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/12/10.1063/1.4754118
10.1063/1.4754118
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