Twin model for orthorhombic perovskites

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We present a detailed single crystal x-ray diffraction study of twinned orthorhombic perovskites. The diffraction pattern can be indexed on a $2a_p$x$2a_p$x$2a_p$ lattice, but does not obey cubic symmetry relations. The data can be modelled in space group $Pnma$ with a twin based on a distribution of the $b$ axis over three perpendicular cubic axes. This model allows full structure determination in the presence of up to six twin fractions from single crystal x-ray diffraction data.
8 pages, including 4 figures

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Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/17551

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0103628
 http://arxiv.org/abs/cond-mat/0103628

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arXiv