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Strong room temperature exchange bias in self-assembled BiFeO3–Fe3O4 nanocomposite heteroepitaxial films
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10.1063/1.4773567
/content/aip/journal/apl/102/1/10.1063/1.4773567
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/1/10.1063/1.4773567
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Figures

Image of FIG. 1.
FIG. 1.

(a) θ–2θ XRD spectrums for a 120 nm thick film for x = 0.5 and a 250 nm thick film for x = 0.9. (b) Low magnification TEM images for x = 0.5 (upper). High magnification cross-sectional TEM image of BiFeO3–Fe3O4 interfaces (lower). (c) Low magnification TEM images for x = 0.9 films (upper). High magnification cross-sectional STEM images of BiFeO3–Fe3O4 interfaces (lower two figures). Inset of upper panel: selected area diffraction pattern from the film.

Image of FIG. 2.
FIG. 2.

(a) Magnetic hysteresis (M–H) loops for x = 0.5 film of 120 nm thickness measured at room temperature. The applied field directions are in-plane (along [01-1]) and out-of-plane (along [011]). Inset: Schematic illustration of applied field directions. (b) The out-of-plane M–H loops before and after field cooling in out-of-plane direction. Inset shows increase of HC .

Image of FIG. 3.
FIG. 3.

(a) M–H loops for x = 0.9 film of 250 nm thickness measured at room temperature. The applied field directions are in-plane (along [01-1]) and out-of-plane (along [011]). Inset: Schematic illustration of applied field direction. (b) The out-of-plane M–H loops before and after field cooling in the out-of-plane direction. Inset shows that an exchange bias field of ∼40 Oe (0.5 HC ) was achieved.

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/content/aip/journal/apl/102/1/10.1063/1.4773567
2013-01-09
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Strong room temperature exchange bias in self-assembled BiFeO3–Fe3O4 nanocomposite heteroepitaxial films
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/1/10.1063/1.4773567
10.1063/1.4773567
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