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

作　　者：FAN Da-Wei WEI Shu-Yi LIU Jing LI Yan-Chun XIE Hong-Sen 范大伟;魏舒怡;刘景;李延春;谢鸿森(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)

机构地区：[1]Laboratory for Study of the Earth's Interior and Geofluids,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550002 [2]Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049 [3]Graduate University of the Chinese Academy of Sciences,Beijing 100049

出　　处：《Chinese Physics Letters》2011年第7期229-232,共4页中国物理快报（英文版）

基　　金：by the Founds for Huge Scientific Equipment of the National Natural Science Foundation of China and Chinese Academy of Sciences under Grant No 10979053;the National Natural Science Foundation of China under Grant Nos 41004035 and 40873052;the Guizhou Foundation for Science and Technology under Grant No[2010]2231;The experiment was performed at the 4W2 High Pressure Station,Beijing Synchrotron Radiation Facility(BSRF);The High Pressure Station is supported by the Chinese Academy of Sciences under Grant Nos KJCX2-SW-N20 and KJCX2-SW-N03.

摘　　要：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).

关 键 词：MODULUS Solid BULK 

分 类 号：TG1[金属学及工艺—金属学]