High Pressure X-Ray Diffraction Study of a Grossular–Andradite Solid Solution and the Bulk Modulus Variation along this Solid Solution

范大伟; 魏舒怡; 刘景; 李延春; 谢鸿森

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High Pressure X-Ray Diffraction Study of a Grossular–Andradite Solid Solution and the Bulk Modulus Variation along this Solid Solution

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In-situ angle-dispersive x-ray diffraction measurements on three samples of Gr14An84,Gr34An64 and Gr63An34 were performed by using a diamond anvil cell instrument with synchrotron radiation at the Beijing Synchrotron Radiation Facility at up to 13.7 GPa.A least−square fit of the pressure-volume to the Birch–Murnaghan equation of state,when fixed K'0=4.0 yields bulk modulus values of K0=166±2,168±3,173±2 GPa for Gr_(14)An_(84),Gr_(34)An_(64 )and Gr_(63)An_(34),respectively.The bulk modulus increases from 166±2 GPa for Gr_(14)An_(84) and to 173±2 GPa for Gr_(63)An_(34) with the increasing An content.Furthermore,by linear interpolation,the bulk modulus of the Gr−An binary system as a function of An content can be expressed as K0(GPa)=176.9(9)−0.12(1)XAn(R^(2)=0.987).

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《中国物理快报：英文版》 |2011年第7期|229-232|共4页
作者
范大伟; 魏舒怡; 刘景; 李延春; 谢鸿森;
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作者单位

Laboratory for Study of the Earth's Interior and Geofluids;

Institute of Geochemistry;

Chinese Academy of Sciences;

Guiyang 550002;

Institute of High Energy Physics;

Chinese Academy of Sciences;

Beijing 100049;

Graduate University of the Chinese Academy of Sciences;

Beijing 100049;

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原文格式 PDF
正文语种 chi
中图分类金属学与热处理;
关键词
modulus; Solid; Bulk;

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High Pressure X-Ray Diffraction Study of a Grossular–Andradite Solid Solution and the Bulk Modulus Variation along this Solid Solution

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