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 ...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).展开更多
The compression behavior of a natural hydroxyapophyllite is investigated up to about 10.01 GPa at 300 K using in situ angle-dispersive X-ray diffraction and a diamond anvil cell at the High Pressure Experiment Station...The compression behavior of a natural hydroxyapophyllite is investigated up to about 10.01 GPa at 300 K using in situ angle-dispersive X-ray diffraction and a diamond anvil cell at the High Pressure Experiment Station, Beijing Synchrotron Radiation Facility （BSRF）. Over this pressure range, no phase change or disproportionation is observed. The isothermal equation of state is determined for the first time. The values of zero-pressure volume V0, isothermal bulk modulus K0, and K0＇ refined with a third-order Birch-Mumaghan equation of state are V0 = 1276.3 ± 0.9 A3, K0 = 71± 3 GPa, and K0＇ = 8 ±1. Furthermore, we confirm that the values of linear compressibility β along the a and c directions of hydroxyapophyllite are elastically anisotropic.展开更多
The phase relations and pressure volume dependences of galena （PbS） under high pressure and high temperature are investigated by means of in situ observation using resistance heating in a diamond anvil cell and sync...The phase relations and pressure volume dependences of galena （PbS） under high pressure and high temperature are investigated by means of in situ observation using resistance heating in a diamond anvil cell and synchrotron radiation. The phase transition from NaCl type to TII type takes place at approximately 2.4 GPa. A fit to the high temperature third-order Bireh-Murnaghan equation of state yields an isothermal bulk modulus Ko = 37（3） GPa, and its pressure derivative K＇0 = 3.6（3）, the temperature derivative of the bulk modulus （ K/ T）p = -0.022（9） GPaK^-1, and the thermal expansion coeffeient α0 = 2.2（5） × 10^-5 K^-1 for TII-type galena. The linear compressibilities j3 along a, b and c directions of TII type is elastically anisotropic （βa = 3.4 × 10^-3 GPa^-1, βb = 1.4× 10^-4 GPa^-1 and βc = 1.6 × 10^-3 GPa^-1）. We obtain the temperature derivative of the bulk modulus （ K/ T）p and thermal expansion coefficient α0 for TlI-type galena for the first time.展开更多
We investigate the elastic behavior of a natural clinozoisite under about 20.4 GPa at 300 K using in situ angle-dispersive x-ray diffraction and a diamond anvil cell at the National Synchrotron Light Source,Brookhaven...We investigate the elastic behavior of a natural clinozoisite under about 20.4 GPa at 300 K using in situ angle-dispersive x-ray diffraction and a diamond anvil cell at the National Synchrotron Light Source,Brookhaven National Laboratory.Over this pressure range,no phase change or disproportionation has been observed.The isothermal equation of state is determined.The values of V0 and K0 refined by the Murnaghan equation of state are V0=460.0±0.2Å3,K0=138±3 GPa.Consequently,it can be concluded that the compressibility of clinozoisite under high pressures is accurately constrained.展开更多
We report the results of a natural phenacite from 0 to 30.9 GPa using in situ angle-dispersive X-ray diffraction and a diamond anvil cell at the National Synchrotron Light Source, Brookhaven National Laboratory. Over ...We report the results of a natural phenacite from 0 to 30.9 GPa using in situ angle-dispersive X-ray diffraction and a diamond anvil cell at the National Synchrotron Light Source, Brookhaven National Laboratory. Over this pressure range, no phase change or disproportionation has been observed. The isothermal equation of state was determined. The values of V0, K0, and K0 refined with a third-order Birch-Murnaghan equation of state are V0=1116.1：E1.2 -3 K0=2234-9 GPa, and K=5.54-0.8. rthermore, we confirm that the linear compressibilities （/3） along a and c directions of phenacite are elastically isotropic （a=1.50x10-3 and /3c=1.34x10-3 CPa-1）. Consequently, it can be concluded that the compressibility of phenacite under high pressures has been accurately constrained.展开更多
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 10979053the National Natural Science Foundation of China under Grant Nos 41004035 and 40873052+2 种基金the Guizhou Foundation for Science and Technology under Grant No[2010]2231The 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.
文摘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).
基金Project supported by the National Natural Science Foundation of China (Grant Nos. 41004035 and 90914008)the Western Doctor Special Fund of the West Light Foundation of the Chinese Academy of Sciences+1 种基金the Research Start-up Funds of the Excellent Doctoral Dissertation and Dean Award of Chinese Academy of SciencesThe High Pressure Station is supported by Chinese Academy of Sciences (Grant Nos. KJCX2-SW-N20 and KJCX2-SW-N03)
文摘The compression behavior of a natural hydroxyapophyllite is investigated up to about 10.01 GPa at 300 K using in situ angle-dispersive X-ray diffraction and a diamond anvil cell at the High Pressure Experiment Station, Beijing Synchrotron Radiation Facility （BSRF）. Over this pressure range, no phase change or disproportionation is observed. The isothermal equation of state is determined for the first time. The values of zero-pressure volume V0, isothermal bulk modulus K0, and K0＇ refined with a third-order Birch-Mumaghan equation of state are V0 = 1276.3 ± 0.9 A3, K0 = 71± 3 GPa, and K0＇ = 8 ±1. Furthermore, we confirm that the values of linear compressibility β along the a and c directions of hydroxyapophyllite are elastically anisotropic.
基金Supported by the Funds for Huge Scientific Equipment from the National Natural Science Foundation of China and Chinese Academy of Sciences under Grant No 10979053, the Knowledge Innovation Project of Chinese Academy of Sciences （KJCX2-SW- N20） and the National Natural Science Foundation of China under Grant No 40873052, the Guizhou Foundation for Science and Technology under Grant No [2010]2231.
文摘The phase relations and pressure volume dependences of galena （PbS） under high pressure and high temperature are investigated by means of in situ observation using resistance heating in a diamond anvil cell and synchrotron radiation. The phase transition from NaCl type to TII type takes place at approximately 2.4 GPa. A fit to the high temperature third-order Bireh-Murnaghan equation of state yields an isothermal bulk modulus Ko = 37（3） GPa, and its pressure derivative K＇0 = 3.6（3）, the temperature derivative of the bulk modulus （ K/ T）p = -0.022（9） GPaK^-1, and the thermal expansion coeffeient α0 = 2.2（5） × 10^-5 K^-1 for TII-type galena. The linear compressibilities j3 along a, b and c directions of TII type is elastically anisotropic （βa = 3.4 × 10^-3 GPa^-1, βb = 1.4× 10^-4 GPa^-1 and βc = 1.6 × 10^-3 GPa^-1）. We obtain the temperature derivative of the bulk modulus （ K/ T）p and thermal expansion coefficient α0 for TlI-type galena for the first time.
基金Supported by the Mutual Foundation of Large Scientific Facilities of the National Natural Science Foundation of China and the Chinese Academy of Sciences(No 10979053)the National Natural Science Foundation of China under Grant Nos 41004035 and 90914008+1 种基金the Knowledge Innovation Project of Chinese Academy of Sciences(No KZCX2-EW-QN602)the National Synchrotron Light Source,Brookhaven National Laboratory supported by the U.S.Department of Energy,Office of Science,Office of Basic Energy Sciences,under Contract No DE-AC02-98CH10886.
文摘We investigate the elastic behavior of a natural clinozoisite under about 20.4 GPa at 300 K using in situ angle-dispersive x-ray diffraction and a diamond anvil cell at the National Synchrotron Light Source,Brookhaven National Laboratory.Over this pressure range,no phase change or disproportionation has been observed.The isothermal equation of state is determined.The values of V0 and K0 refined by the Murnaghan equation of state are V0=460.0±0.2Å3,K0=138±3 GPa.Consequently,it can be concluded that the compressibility of clinozoisite under high pressures is accurately constrained.
基金Supported by Mutual Foundation of Large Scientific Facilities of National Natural Science Foundation of China, Chinese Academy of Sciences (10979053)National Natural Science Foundation of China (41004035, 90914008)+2 种基金Knowledge Innovation Project of Chinese Academy of Sciences (KZCX2-EW-QN602)COMPRES, Consortium for Materials Properties Research in Earth Sciences under NSF Cooperative Agreement EAR 06-49658supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences (DEAC02-98CH10886)
文摘We report the results of a natural phenacite from 0 to 30.9 GPa using in situ angle-dispersive X-ray diffraction and a diamond anvil cell at the National Synchrotron Light Source, Brookhaven National Laboratory. Over this pressure range, no phase change or disproportionation has been observed. The isothermal equation of state was determined. The values of V0, K0, and K0 refined with a third-order Birch-Murnaghan equation of state are V0=1116.1：E1.2 -3 K0=2234-9 GPa, and K=5.54-0.8. rthermore, we confirm that the linear compressibilities （/3） along a and c directions of phenacite are elastically isotropic （a=1.50x10-3 and /3c=1.34x10-3 CPa-1）. Consequently, it can be concluded that the compressibility of phenacite under high pressures has been accurately constrained.
