TY - JOUR
T1 - High-pressure synchrotron X-ray diffraction study of spessartine and uvarovite
T2 - A comparison between different equation of state models
AU - Diella, Valeria
AU - Sani, Alessandra
AU - Levy, Davide
AU - Pavese, Alessandro
PY - 2004
Y1 - 2004
N2 - The lattice parameters of natural spessartine and uvarovite garnets were measured as a function of pressure up to 25 and 35 GPa, respectively, by synchrotron radiation powder diffraction. The bulk modulus and its first and second derivatives were determined by fitting three equation of state (EoS) models to the pressure-volume data: the Birch-Murnaghan EoS, the Vinet Eos, and the Poirier-Tarantola logarithmic EoS. The third-order Birch-Murnaghan EoS, assuming V0 at its experimental value, yields K0 = 171 (1) GPa and K0' = 5.4 (2) with V0 = 1573 Å3 for spessartine, and K0 = 160(1) GPa and K0' = 5.8(1) with V0 = 1697.5 Å3 for uvarovite. The results obtained by the EoS models are consistent with each other within the experimental uncertainties. A comparison is made with earlier results from the literature.
AB - The lattice parameters of natural spessartine and uvarovite garnets were measured as a function of pressure up to 25 and 35 GPa, respectively, by synchrotron radiation powder diffraction. The bulk modulus and its first and second derivatives were determined by fitting three equation of state (EoS) models to the pressure-volume data: the Birch-Murnaghan EoS, the Vinet Eos, and the Poirier-Tarantola logarithmic EoS. The third-order Birch-Murnaghan EoS, assuming V0 at its experimental value, yields K0 = 171 (1) GPa and K0' = 5.4 (2) with V0 = 1573 Å3 for spessartine, and K0 = 160(1) GPa and K0' = 5.8(1) with V0 = 1697.5 Å3 for uvarovite. The results obtained by the EoS models are consistent with each other within the experimental uncertainties. A comparison is made with earlier results from the literature.
UR - http://www.scopus.com/inward/record.url?scp=1642267598&partnerID=8YFLogxK
U2 - 10.2138/am-2004-2-317
DO - 10.2138/am-2004-2-317
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AN - SCOPUS:1642267598
SN - 0003-004X
VL - 89
SP - 371
EP - 376
JO - American Mineralogist
JF - American Mineralogist
IS - 2-3
ER -