New Incommensurate Elongated-Triangle Phase in Quartz

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We present for the first time the evidence for a thermodynamically stable incommensurate elongated-triangle ($ELT$) phase in quartz observed by transmission electron microscopy at structural $α-β$ transition. The phase sequence on cooling is: uniform $β$ phase - stripe incommensurate phase (ferroelastic) - incommensurate equilateral-triangle ($EQT$) phase (ferroelectric) - incommensurate $ELT$ (ferroelectric and ferroelastic) - uniform $α$ phase. The $ELT$ blocks could be responsible for the large light scattering in the vicinity of $α-β$ transition.
4 pages revtex file +3 uuencoded compressed postscript figures

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Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/147540

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9511002
 http://arxiv.org/abs/cond-mat/9511002
 JETP Lett. 64, 410 (1996)
 doi:10.1134/1.567212

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arXiv