TY - JOUR
T1 - Elasticity of single-crystal phase D (a dense hydrous magnesium silicate) by Brillouin spectroscopy
AU - Liu, Lin Gun
AU - Okamoto, K.
AU - Yang, Yi Jong
AU - Chen, Chien Chih
AU - Lin, Chung Cherng
N1 - Funding Information:
We are indebted to S. Pol for supporting the usage of the multi-anvil press to synthesize the sample at Universita Studi Degli di Milano, to T. Komabayashi at Tokyo Institute of Technology for carrying out the X-ray measurement of the sample, and to Y. Iizuka for conducting the electron microprobe analysis. T.P. Mernagh at Geoscience Australia critically read and commented on the manuscript. This work was supported by the research grants from National Sciences Council, ROC.
PY - 2004/11
Y1 - 2004/11
N2 - Phase D (MgSi2O6H2) is the only hydrous magnesium silicate, where all Si atoms are octahedrally coordinated. The single-crystal elastic constants of phase D have been measured by Brillouin spectroscopy at ambient conditions. The elastic constants C11, C 33, C44, C12, C13 and C 14, based on a trigonal unit cell, are 284.4±3.0, 339.4±9.1,120.7±1.9, 89.4±4.2,126.6±3.1 and -4.7±1.4 GPa, respectively. The aggregate adiabatic bulk modulus, using the Voigt-Reuss-Hill (VRH) scheme, is 175.3± 14.8 GPa and the shear modulus is 104.4± 13.6 GPa. These data yield the compressional-wave velocity, Vp=9.70± 0.51 km/s, and the shear-wave velocity, Vs=5.59 ±0.36 km/s, at ambient conditions. Thus, phase D is not only the most closely packed but the least compressible hydrous magnesium silicate known to date.
AB - Phase D (MgSi2O6H2) is the only hydrous magnesium silicate, where all Si atoms are octahedrally coordinated. The single-crystal elastic constants of phase D have been measured by Brillouin spectroscopy at ambient conditions. The elastic constants C11, C 33, C44, C12, C13 and C 14, based on a trigonal unit cell, are 284.4±3.0, 339.4±9.1,120.7±1.9, 89.4±4.2,126.6±3.1 and -4.7±1.4 GPa, respectively. The aggregate adiabatic bulk modulus, using the Voigt-Reuss-Hill (VRH) scheme, is 175.3± 14.8 GPa and the shear modulus is 104.4± 13.6 GPa. These data yield the compressional-wave velocity, Vp=9.70± 0.51 km/s, and the shear-wave velocity, Vs=5.59 ±0.36 km/s, at ambient conditions. Thus, phase D is not only the most closely packed but the least compressible hydrous magnesium silicate known to date.
KW - A. Inorganic crystals
KW - D. Elasticity
KW - D. Mechanical properties
KW - E. Elastic light scattering
UR - http://www.scopus.com/inward/record.url?scp=6344249071&partnerID=8YFLogxK
U2 - 10.1016/j.ssc.2004.09.005
DO - 10.1016/j.ssc.2004.09.005
M3 - 期刊論文
AN - SCOPUS:6344249071
SN - 0038-1098
VL - 132
SP - 517
EP - 520
JO - Solid State Communications
JF - Solid State Communications
IS - 8
ER -