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Exchange coupling and coercivity enhancement in cuprate/manganite bilayers
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View: Figures


Image of FIG. 1.
FIG. 1.

(a) Idealized illustration of the atomic and spin configurations at the LCO/LSMO interface. (b) XRD θ-2θ data of the bilayer. The stars (*) denote the peaks of STO substrate. The background picture is an atomic force microscopy image of 3 μm × 3 μm for a single layer LSMO film. (c) RSM data around the (103) Bragg reflection of STO for the bilayer.

Image of FIG. 2.
FIG. 2.

(a) M-T data measured on the LCO/LSMO bilayer as well as on the LSMO and LCO single layers. The open and filled symbols represent the ZFC and FC curves, respectively. (b) M-T data of the LCO/LSMO bilayer sample measured under different magnetic fields, H = 0.05, 0.1, 0.2, 0.3, 0.5, and 1 kOe. The solid and dashed lines are the ZFC and FC curves, respectively. (c) AT line plotted for the field dependence of peak temperature TP estimated from the ZFC M-T curves in (b). (d) M-H curves at 5 K for the LCO/LSMO, LSMO, and LCO samples.

Image of FIG. 3.
FIG. 3.

(a) M-H data measured on LCO/LSMO bilayer at different temperatures. (b) Temperature dependence of the coercivity. The line is the fitting to the exponential law. The arrow marks the spin-glass freezing temperature T f.

Image of FIG. 4.
FIG. 4.

M-H curves measured at 5 K on the LCO/LSMO bilayer samples with the LCO layer having different thicknesses.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Exchange coupling and coercivity enhancement in cuprate/manganite bilayers