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Annealing effect on ion conduction of nanosized multilayers
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10.1063/1.3143623
/content/aip/journal/jap/105/11/10.1063/1.3143623
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/11/10.1063/1.3143623
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Figures

Image of FIG. 1.
FIG. 1.

(a) Time dependence of the overall conductivity measured parallel and perpendicular to the interface at 500 K during the heat treatment. Starting from a given data point the sample was heated to 780 K and then cooled down to 500 K to obtain the next data point. The heating/cooling cycle consisted of a stepwise transition by 50 K and a respective waiting period of 1 h. (b) Arrhenius plots for the transient and stationary conductivities in both directions. The conductivity combination of isolated layers for the two directions is shown for comparison.

Image of FIG. 2.
FIG. 2.

The average conductivities measured parallel to the interface as a function of inverse interfacial spacings at for sample . Nonstationary, stationary data, and the conductivity combination of isolated layers are shown for comparison.

Image of FIG. 3.
FIG. 3.

Derived defect concentration profiles in sample at 500 K (a) for the stationary data after annealing and (b) for the transient data before annealing. For the parallel conductivity of , a (modified) Mott–Schottky model applies (Ref. 19), while for the perpendicular conductivity of , a Gouy–Chapman model has been used (Ref. 20).

Image of FIG. 4.
FIG. 4.

Cross-section TEM images for (a) the nonannealed and (b) the annealed heterolayers. The insets give the diffraction pattern of the respective heterolayer.

Image of FIG. 5.
FIG. 5.

Schematic representation of the ion transfer at the interface for (a) before contact, (b) equilibrium contact (after annealing), and (c) freshly contacted (before annealing) with the dashed area representing the unstable microstructural defects at the interface.

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/content/aip/journal/jap/105/11/10.1063/1.3143623
2009-06-11
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Annealing effect on ion conduction of nanosized CaF2/BaF2 multilayers
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/11/10.1063/1.3143623
10.1063/1.3143623
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