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Magnetic properties of CoFe2O4 nanoparticles distributed in a multiferroic BiFeO3 matrix
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10.1063/1.4729831
/content/aip/journal/jap/111/12/10.1063/1.4729831
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/12/10.1063/1.4729831

Figures

Image of FIG. 1.
FIG. 1.

(a) Symmetric XRD and GIXD and (b) RSM patterns of the BiFeO3-CoFe2O4 thin film.

Image of FIG. 2.
FIG. 2.

(a) Cross-sectional TEM image of the BiFeO3-CoFe2O4 thin film. (b) Selected area diffraction pattern from the BiFeO3-CoFe2O4 thin film. (c) Enlarged TEM image of the BiFeO3-CoFe2O4 thin film. (d) Nanobeam electron diffraction pattern of a CoFe2O4 particle in a BiFeO3 matrix.

Image of FIG. 3.
FIG. 3.

XRR pattern of the BiFeO3-CoFe2O4/Pt structure. The inset shows a wide range of data. σ s and σ i indicate surface roughness and interface roughness, respectively.

Image of FIG. 4.
FIG. 4.

Leakage current properties of the BiFeO3 and BiFeO3-CoFe2O4 thin films measured at room temperature.

Image of FIG. 5.
FIG. 5.

(a) D-E hysteresis loops of the BiFeO3 and the BiFeO3-CoFe2O4 thin films measured at 90 K with a frequency of 2 kHz. (b) Switching charge densities of the BiFeO3 and BiFeO3-CoFe2O4 thin films at 90 K, estimated by a PUND measurement with pulse width and interval of 100 μs.

Image of FIG. 6.
FIG. 6.

(a) M-H hysteresis loop of the BiFeO3-CoFe2O4 thin film measured at 300 K. The inset shows an enlargement of the region around the origin. (b) M-H hysteresis loops of the BiFeO3-CoFe2O4 thin film measured at 10, 100, 200, and 300 K. (c) Temperature dependency of M s, M r, and H c.

Image of FIG. 7.
FIG. 7.

ZFC-FC curves of the BiFeO3-CoFe2O4 thin film with an applied magnetic field of 100 Oe. The inset shows normalized data with the magnetization values at 10 K.

Tables

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Table I.

Local compositions of the BiFeO3-CoFe2O4 composite film measured by EDX with an electron beam spot size of 10 nm.

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/content/aip/journal/jap/111/12/10.1063/1.4729831
2012-06-18
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetic properties of CoFe2O4 nanoparticles distributed in a multiferroic BiFeO3 matrix
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/12/10.1063/1.4729831
10.1063/1.4729831
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