| A new way of transformation from a-quartz to coesite |
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| 作者单位： | SU Wenhui，LIU Shue，XU Dapeng，WANG Weiran，YAO Bin，GUO Xingyuan，LIU Zhiguo，and ZHONG Zheng ( Center for the Condensed Matter Science and Technology，Harbin Institute of Technology，Harbin 150001，China; Center for Rare-Earth Solid State Physics，Jilin University，Changchun 130023，China; International Center for Materials Physics，Chinese A-cademy of Sciences，Shenyang 110015，China; Center for Condensed Matter and Radiation Physics，China Center of Advanced Science and Technology (World Laboratory)，Beijing 100080，China; Department of Physics，University of Windsor，Windsor，ON N9B 3P4，Canada) |
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| 基金项目： | Supported by National Natural Science Foundation of China (Grant No. 10374022) |
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| 摘 要： | A laboratory method combining the high-energy mechanical ball milling and high static pressure has been suggested for modelling synthesis of coesite in the Earth's crust. A window of milling time, a mechanical collision-induced intermediate phase ofα-quartz and its condition of easily crystallizing into coesite under the condition of 3.0 GPa, 923 K, < 1.0 min have been discovered. The new method needs much shorter synthesizing time and lower synthesizing critical pressure than those used before. The Raman spectra for the coesite synthesized by the present method have covered all the information of those natural and synthesized coesites reported before. It is demonstrated that this method has a great potential in geo-science research and implied the other possible mechanism of coesite formation in the Earth's crust.
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A new way of transformation from a-quartz to coesite |
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| SU Wenhui,LIU Shue,XU Dapeng,WANG Weiran,YAO Bin,GUO Xingyuan,LIU Zhiguo,and ZHONG Zheng. A new way of transformation from a-quartz to coesite[J]. Progress in Natural Science, 2006, 0(10) |
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| Authors: | SU Wenhui LIU Shue XU Dapeng WANG Weiran YAO Bin GUO Xingyuan LIU Zhiguo and ZHONG Zheng |
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| Abstract: | |
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| Keywords: | quartz-coesite high-energy mechanical ball milling high state pressure Raman spectrum metastable phase sub-duction-exhumation of plate. |
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