Origin of the opalescence at the α-β transition of quartz:: Role of the incommensurate phase studied by synchrotron radiation -: art. no. 155701

被引:7
|
作者
Dolino, G
Bastie, P
Capelle, B
Chamard, V
Härtwig, J
Guzzo, PL
机构
[1] Univ Grenoble 1, Spectrometrie Phys Lab, UMR 5588, F-38402 St Martin Dheres, France
[2] Univ Paris 06, Lab Mineral & Cristallog, UMR 7590, F-75320 Paris, France
[3] Lab Thermodynam & Phys Chim Met, UMR 5614, F-38402 St Martin Dheres, France
[4] European Synchrotron Radiat Facil, F-38043 Grenoble, France
[5] Univ Fed Pernambuco, Dept Engn Minas, BR-50740530 Recife, PE, Brazil
关键词
D O I
10.1103/PhysRevLett.94.155701
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The origin of the light scattering observed at the alpha-beta transition of quartz is still a subject of controversy. We present structural studies performed during the coexistence of the alpha and the intermediate incommensurate (inc) phases using simultaneously synchrotron x-ray diffraction and optical techniques. The small and large angle light scatterings are due, respectively, to the orientation domains of the 3q inc phase and to the alpha phase twins revealed by diffuse x-ray scattering. In the vicinity of the interphase boundary, the two light scattering regions, both with perturbed properties, form a complex multiscale structure.
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页码:1 / 4
页数:4
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