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The study of perpendicular magnetic anisotropy in CoFeB sandwiched by MgO and tantalum layers using polarized neutron reflectometry
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10.1063/1.4718423
/content/aip/journal/apl/100/20/10.1063/1.4718423
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/20/10.1063/1.4718423
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Figures

Image of FIG. 1.
FIG. 1.

Hall resistance hysteresis loops of (a) Ta(2.2)/CoFeB(1.04)/MgO(1.1)/CoFeB(1.22)/Ta(2.2) (blue solid circles) and (b) MgO(1.1)/CoFeB(1.22)/Ta(2.2) (red solid squares) and Ta(2.2)/CoFeB(1.04)/MgO(1.1) (red open squares) films annealed at 300 °C.

Image of FIG. 2.
FIG. 2.

The experimental R + (open squares) and R (open circles) taken at room temperature and H ext = 100 Oe as functions of Q. The inset shows the PNR scattering geometry. The magnetization M is perpendicular to the plane of the sample and parallel to Q when H ext = 100 Oe. The small external magnetic field Hext provides a guide field for the polarized neutron beam.

Image of FIG. 3.
FIG. 3.

(a) The experimental reflectivities R + (open squares) and R (open circles) measured at room temperature and H ext = 10 kOe as functions of Q. The solid lines are the fitted theoretical curves. Here, M is in the plane of the sample and perpendicular to Q when H ext = 10 kOe. (b) The depth-dependence of Im-SLDN(z) (left), SLDN(z) (middle), and magnetization of CoFeB layer from SLDM(z) (right). The thin green lines show the thicknesses of layers in the sample obtained from the fit to the data. XT and XB layers represent the interface layers between CoFeB and tantalum layers.

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/content/aip/journal/apl/100/20/10.1063/1.4718423
2012-05-16
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: The study of perpendicular magnetic anisotropy in CoFeB sandwiched by MgO and tantalum layers using polarized neutron reflectometry
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/20/10.1063/1.4718423
10.1063/1.4718423
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