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Ferroelectric-domain-controlled magnetic anisotropy in Co40Fe40B20/YMnO3 multiferroic heterostructure
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) A sketch of the sample structure and angle definition respecting to the [001] direction. (b) XRD pattern of YMO (110) single crystal shows the (LL0) reflections. (c) Phi-scan around the (112) reflection of YMO crystal. Inset is the temperature dependence of susceptibility at H = 100 Oe for cooling from 100 to 2 K (FCC) and heating from 2 to 100 K (FCW). (d) PFM images taken from the (001) plane and (110) plane of a YMO crystal. The and (red) arrows represent the out-of-plane 180°domains of (001) plane and and (blue) arrows represent the in-plane 180°domains of (110) plane.

Image of FIG. 2.
FIG. 2.

(a) In-plane angular dependence of Mr/Ms for CFB/YMO (solid symbols) and Ni/YMO (open symbols) at different temperatures. Solid lines and dashed lines are theoretical fittings with cosine and sine function, respectively. (b) In-plane angular dependence of Hc for CFB/YMO at different temperatures. (c) In-plane Hc distribution fitted by the two-phase model as the solid lines. (d) Temperature dependence of Hc with H // MEA for samples grown on different substrates. The black, red, and green solid lines are guide to the eye. The blue solid line is obtained from the two-phase model fitting.

Image of FIG. 3.
FIG. 3.

Initial magnetized curve with H // hard axis for WOB (a) and WB (b). The solid lines are the linear fitting to calculate Ku . The insets are sketches of the sample structures. (c) The temperature dependence of nucleation field obtained from the two-phase model fitting in WOB and WB. (d) Temperature dependence of Ku determined from (a) and (b).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ferroelectric-domain-controlled magnetic anisotropy in Co40Fe40B20/YMnO3 multiferroic heterostructure