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Effects of interfacial polarization on the dielectric properties of thin film capacitors
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10.1063/1.2900989
/content/aip/journal/apl/92/12/10.1063/1.2900989
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/12/10.1063/1.2900989

Figures

Image of FIG. 1.
FIG. 1.

XRD profile of the BFO/LSMO heterostructure on STO (001) substrate.

Image of FIG. 2.
FIG. 2.

The frequency dependence of the capacitance of the In/BFO/LSMO capacitor under forward biases. The inset shows the characteristics of the In/BFO/LSMO capacitor at and . The ac oscillation voltage was .

Image of FIG. 3.
FIG. 3.

(a) Complex impedance spectra of the In/BFO/LSMO capacitor under different dc biases, the vertical line shows the demarking frequency where the polarization changed from interfacial polarization to bulk polarization. The solid lines through the date points are the fitting results obtained by a series of three parallel circuits. (b) Representation of vs for the complex impedance spectrum under zero bias; the inset displays the equivalent fitting circuit.

Tables

Generic image for table
Table I.

Fitting parameters of Fig. 3(a) using the equivalent circuit shown in the inset of Fig. 3(b), where , describe the In/BFO interface, , describe the BFO/LSMO interface, and , describe the bulk.

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/content/aip/journal/apl/92/12/10.1063/1.2900989
2008-03-25
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Effects of interfacial polarization on the dielectric properties of BiFeO3 thin film capacitors
http://aip.metastore.ingenta.com/content/aip/journal/apl/92/12/10.1063/1.2900989
10.1063/1.2900989
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