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High-pressure behavior of the synthetic Ca2Sb2O7 weberite-type compound
- Source :
-
Solid State Sciences . May2011, Vol. 13 Issue 5, p1092-1095. 4p. - Publication Year :
- 2011
-
Abstract
- Abstract: An in situ high-pressure X-ray diffraction study has been carried out at room temperature up to 9.23 GPa on a crystal of Ca2Sb2O7 having a weberite-2O structure synthesized by solid-state reaction. A 2nd-order Birch–Murnaghan Equation of State (EoS) was used to refine the pressure–volume data. The refinement of the unit-cell volume and of the isothermal bulk modulus at room pressure leads to: V 0 = 555.8 (1), KT 0 = 154.6 (9) GPa. Unit-cell parameters decrease gradually as a function of pressure with a bulk modulus anisotropy scheme Ka 0 > Kb 0 > Kc 0, with c being the softest direction. The compressional behavior of Ca2Sb2O7 is compared with that shown by ingersonite, Ca3MnSb4O14, a mineral showing a weberite-3T structure. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 12932558
- Volume :
- 13
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Solid State Sciences
- Publication Type :
- Academic Journal
- Accession number :
- 60240635
- Full Text :
- https://doi.org/10.1016/j.solidstatesciences.2011.01.013