镁铝石榴子石的高压X射线衍射研究

马艳梅; 彭刚; 李敏; 李雪飞; 高玲玲; 崔启良; 邹广田

doi:10.11858/gywlxb.2008.03.014

镁铝石榴子石的高压X射线衍射研究

doi: 10.11858/gywlxb.2008.03.014

1.
吉林大学超硬材料国家重点实验室，吉林长春 130012；
2.
吉林大学农学部，吉林长春 130062

详细信息

通讯作者:
崔启良

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出版历程
- 收稿日期: 2007-09-30
- 修回日期: 2007-12-17
- 发布日期: 2008-09-05

X-Ray Diffraction Investigation of Pyrope under Pressure

1.
National Laboratory of Superhard Materials, Jilin University, Changchun 130012, China;
2.
Department of Agronomy, Jilin University, Changchun 130062, China

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Corresponding author: CUI Qi-Liang

摘要

摘要: 对于天然镁铝石榴子石（Pyrope），在0～25.3 GPa压力条件下，在美国布鲁克海汶（Brookhaven）国家实验室国家同步辐射实验站，利用金刚石压腔装置（DAC），进行了角散X 射线粉末衍射的高压原位测量，获得了天然镁铝石榴子石随压力变化的衍射图谱。采用Materials Studio软件的Refinement模块对衍射图谱进行了分析，得到了镁铝石榴子石的晶胞参数及其随压力的变化，进而利用Birch-Murnaghan状态方程进行数值拟合，得到了镁铝石榴子石的零压体弹模量B0＝199 GPa（B0＝4）。
- 镁铝石榴子石 /
- 金刚石压腔装置（DAC） /
- 同步辐射 /
- 角散X射线衍射
Abstract: The in situ angle dispersive X-ray powder diffraction of natural pyrope collected from Zhenyuan in China using synchrotron radiation has been measured under high pressure (0~ 25.3 GPa) conditions with diamond anvil cell (DAC). We have not found any convincing evidence for a phase transformation in the experimental pressure range. The XRD patterns were then refined by using the refinement module combined in the Materials Studio program. We fit the Birch-Murnaghan equation of state and obtained its ambient pressure bulk modulus B0=199 GPa (B0=4).
- pyrope /
- diamond anvil cell /
- synchrotron radiation /
- angle dispersive X-ray powder diffraction

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参考文献(9)

Xie H S. Materials Science of the Earth's Interior [M]. Beijing: Sciences Press, 1997: 152-155. (in Chinese)

谢鸿森. 地球深部物质科学导论 [M]. 北京: 科学出版社, 1997: 152-155.

Webb S L. The Elasticity of the Upper Mantle Orthosilicates Olivine and Garnet to 3 GPa [J]. Phys Chem Minerals, 1989, 16: 684-692.

Leitner B J, Weidner D J, Liebermann R G. Elasticity of Single Crystal Pyrope and Implications for Garnet Solid Solution Series [J]. Phys Earth Planet Inter, 1980, 22: 111-121.

Sato Y, Akaogi M, Akimoto S. Hydrostatic Compression of the Synthetic Garnets Pyrope Andalmandine [J]. J Geophys Res, 1978, 83: 335-338.

Levien L, Prewitt C T. Compression of Pyrope [J]. AM Mineral, 1979, 64: 805-808.

D'Arco P, Fava F F, Dovesi R, et al. Structural and Electronic Properties of Pyrope Garnet (Mg3Al2Si3O12): An Ab Initio Study [J]. J Phys: Condens Matter, 1996, 8: 8815-8828.

Song M S, Xie H S, Xu Y S. The Property, State and Evolvement of the Mantle Matter and the Development of Phase Transition Dynamics [J]. Geology Earth Chemistry, 1995, 6: 76-79. (in Chinese)

宋茂双, 谢鸿森, 徐有生. 地幔物质的性质、状态与演化及相变动力学研究进展 [J]. 地质地球化学, 1995, 6: 76-79.

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