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Nanolamellar magnetoelectric bicrystal
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10.1063/1.3241999
/content/aip/journal/apl/95/15/10.1063/1.3241999
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/15/10.1063/1.3241999
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Low magnification image including a selected area electron diffraction pattern demonstrating the long coherence length of the periodic structure. (b) Conventional image; the dark and bright areas are CFO and BTO lamellae, respectively, and the dark center line in the bright stripes is the image of a stacking fault. (c) [111] zone HRTEM images showing the atomic structure of each layer of the bicrystal. (d) Schematic diagram of the in-plane image corresponding to the common zone axis. The oxygen octahedra appear as rhombes. It shows the stacking fault in the BTO portion and the corrugated interface at which oxygen octahedra “belonging” to CFO and BTO overlap.

Image of FIG. 2.
FIG. 2.

[(a) and (b)] Relative dielectric constant and loss factor vs temperature measured at different frequencies. [(c) and (d)] Relative dielectric constant and loss factor vs temperature of the bicrystal when subjected to an external magnetic field of 100 Oe. The inset of image (d) demonstrates the Arrhenius behavior of the frequency of the loss maximum at the temperature, , validating the Vogel–Fulcher relationship in different magnetic fields, , 100, and 200 Oe.

Image of FIG. 3.
FIG. 3.

(a) Room temperature magnetic hysteresis loop, the right-hand figure shows the magnetoelectric coupling constant, , determined with a magnetic ac field of 100 Hz as a function of the normalized magnetic bias field, the maximum occurs at a bias field of 10 Oe. (b) Polarization loop at room temperature.

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/content/aip/journal/apl/95/15/10.1063/1.3241999
2009-10-13
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Nanolamellar magnetoelectric BaTiO3–CoFe2O4 bicrystal
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/15/10.1063/1.3241999
10.1063/1.3241999
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