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Anisotropic thermal conductivity of the Aurivillus phase, bismuth titanate : A natural nanostructured superlattice
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10.1063/1.2975163
/content/aip/journal/apl/93/10/10.1063/1.2975163
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/10/10.1063/1.2975163
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

XRD patterns of the -axis textured and random polycrystalline materials. The peaks of the textured material are labeled together with the strongest peak, (117), of the randomly oriented powder pattern based on the orthorhombic unit cell.

Image of FIG. 2.
FIG. 2.

The heat capacity of the textured and randomly oriented materials as a function of temperature indicating that there is no difference within experimental uncertainty between the two materials. The exothermic reaction at , shown in the inset, is associated with the reported orthorhombic-tetragonal reversible phase transformation. Note there is little change in the specific heat above and below the transition (arrowed).

Image of FIG. 3.
FIG. 3.

Thermal conductivity as a function of temperature calculated from the measured diffusivities and specific heats for the randomly oriented material and perpendicular to the layer structure. Also shown is the in-plane conductivity . The lines are the least squared fits.

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/content/aip/journal/apl/93/10/10.1063/1.2975163
2008-09-11
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Anisotropic thermal conductivity of the Aurivillus phase, bismuth titanate (Bi4Ti3O12): A natural nanostructured superlattice
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/10/10.1063/1.2975163
10.1063/1.2975163
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