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arXiv · 1002.1215

Computational study of the dielectric properties of [La,Sc]2O3 solid solutions

Hiroyoshi Momida·Eric Cockayne·Naoto Umezawa·Takahisa Ohno
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Abstract

First-principles calculations were used to compute the dielectric permittivities of hypothetical [La,Sc]2O3 solid solutions in the cubic (bixbyite) and hexagonal La2O3 phases. Dielectric enhancement is predicted at small Sc concentrations due to the rattling ion effect. Similar calculations for a model amorphous La2O3 structure show little change in permittivity when a small amount of Sc is substituted for La. In this case, the local environment around the Sc changes in a way that compensates for the rattling ion effect.

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Hiroyoshi Momida, Eric Cockayne, Naoto Umezawa, Takahisa Ohno. 2010-02-05. Computational study of the dielectric properties of [La,Sc]2O3 solid solutions. https://doi.org/10.1063/1.3360935

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