Advances in the study of the deformation mechanism of stishovite

Azzopardi Keith M.; Brincat Jean-Pierre; Grima Joseph N.; Gatt Ruben

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Advances in the study of the deformation mechanism of stishovite

机译：辉石变形机理的研究进展

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Stishovite, a mineral which is estimated to be abundant in the Earth's mantle, exhibits negative Poisson's ratios for a range of loading directions at specific ambient pressure ranges. Here, we investigate the deformation mechanisms which lead to auxetic behaviour in the (001) plane in further detail, and show that the two-dimensional projection of the structure is auxetic by the type dilating rhombi mechanism. This corroborates the distorting octahedra three-dimensional mechanism described previously [Azzopardi et al., RSC Adv. 5, 8974 (2015)]. (C) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

机译：菱铁矿是一种估计在地球地幔中含量丰富的矿物，在特定的环境压力范围内，对于一定范围的载荷方向，其泊松比呈现负值。在这里，我们更详细地研究了导致（001）平面上出现拉力行为的变形机制，并通过类型扩张菱形机制证明了该结构的二维投影是拉力的。这证实了先前描述的扭曲的八面体三维机制[Azzopardi et al。，RSC Adv。 5，8974（2015）]。（C）2015 WILEY-VCH Verlag GmbH＆Co.KGaA，Weinheim

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《Physica status solidi, B. Basic research》 |2015年第7期|共6页
作者
Azzopardi Keith M.; Brincat Jean-Pierre; Grima Joseph N.; Gatt Ruben;
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正文语种 eng
中图分类固体物理学;
关键词
auxetic behaviour; deformation mechanism; negative Poisson's ratios; stishovite;

机译：膨胀行为;变形机理;负泊松比;锡云母;

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1. Advances in the study of the deformation mechanism of stishovite [J] . Azzopardi Keith M., Brincat Jean-Pierre, Grima Joseph N., Physica status solidi, B. Basic research . 2015,第7期

机译：辉石变形机理的研究进展
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3. Mechanisms of Cr and H incorporation in stishovite determined by single-crystal EPR spectroscopy and DFT calculations [J] . Pan Y., Mashkovtsev R.I., Huang D., The American mineralogist . 2011,第8a9期

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Advances in the study of the deformation mechanism of stishovite

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