HUANG Rong1 LAI Xiaojing1 QIN Shan1 WU Xiang1 LI Yanchun2 LIU Jing2 YANG Ke3 1. Synchrotron radiation X-ray diffraction investigation on the compressibility of lizardite[J]. Nuclear techniques, 2012, 35(11): 801-805.
HUANG Rong1 LAI Xiaojing1 QIN Shan1 WU Xiang1 LI Yanchun2 LIU Jing2 YANG Ke3 1. Synchrotron radiation X-ray diffraction investigation on the compressibility of lizardite[J]. Nuclear techniques, 2012, 35(11): 801-805.DOI:
In situ high-pressure experiments of lizardite have been conducted by means of synchrotron X-ray diffraction with diamond anvil cell at room temperature.No phase transition occurs in the pressure range up to 31.9 GPa.Isothermal equation of state of lizardite can be well expressed by third-order Birch-Murnaghan equation of state
obtaining V0= 353.2(7)3
K0= 75(3) GPa
K0’= 3.4(2)(BSRF data) and V0= 356.5(6)3
K0= 69(3) GPa
K0’= 3.1(3)(SSRF data).These two sets of data show basically good consistency to each other.Anisotropy exists on axial compressibility of lizardite(Kc>Kb≈Ka)
which can be ascribed to the layered structure of lizardite.The direction vertical to the structure layer are more compressible because the structure layers are collected by hydrogen bonds;while the direction parallel to the structure layer is less compressible for the reason of covalent bonds and ionic bonds.