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Control of magnetism in Pb(Zr0.2Ti0.8)O3/La0.8Sr0.2MnO3 multiferroic heterostructures (invited)
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Structural, electric, and magnetic characteristics for a 12 u.c. LSMO patterned and unpatterned sample set: (a) RHEED pattern of the SrTiO3 (001) substrate along the 〈100〉 direction prior to film deposition (top) and of the LSMO film after growth, taken at room temperature along the same direction (bottom). The incident electron beam energy was set to 15 keV. (b) Magnetic hysteresis curve for the unpatterned sample at 100 K. Inset shows piezoelectric force micrograph of the continuous film after growth (10 × 10μm2). In this measurement, a 5 × 5 μm2 square was poled upwards (tip set to −12 V), inside which a smaller 2 × 2 μm2 square was poled downwards (tip set to +12 V); the piezoelectric response was then measured, as reproduced here, showing that the outer (unwritten) area has the same polarization as the inner square (poled downwards). (c) Transport characteristics measured for the device structure (optical image of which is shown in the inset) for both states of the PZT polarization. (d) Magnetoelectric response of the system at 100 K (after Ref. 16).

Image of FIG. 2.
FIG. 2.

(Color online) (a) Room temperature XANES results for a 11 u.c. LSMO film for the two polarization states of the PZT. (b) Difference in light absorption for the two PZT polarization states; dotted line corresponds to the difference assuming a rigid shift in the Mn absorption edge, taking as a reference the averaged data for the accumulation and depletion states. Error bars reflect counting statistics.

Image of FIG. 3.
FIG. 3.

(Color online) Magnetization versus temperature curves for a 15 u.c. La0.45Sr0.55MnO3/SrTiO3(001) film (full circles), and for a 11 u.c. LaMnO3/SrTiO3(001) film (empty diamonds). The inset shows the resistivity versus temperature variation of the La0.45Sr0.55MnO3 film.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Control of magnetism in Pb(Zr0.2Ti0.8)O3/La0.8Sr0.2MnO3 multiferroic heterostructures (invited)