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Paper detail

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

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.

preprint2010arXivOpen access
Hiroyoshi MomidaEric CockayneNaoto UmezawaTakahisa Ohno
cond-mat.mtrl-sci
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Hiroyoshi MomidaEric CockayneNaoto UmezawaTakahisa Ohno

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