The compressibility mechanism of Li3Na3In2F12 garnet
Creators
- 1. Departamento de Fisica de la Materia Condensada, Universidad del Pais Vasco, Apartado 644, Bilbao, E-48080 (Spain)
- 2. Geological Institute, University of Copenhagen, 1350 Copenhagen (Denmark)
- 3. Universite du Maine-Cristallogenese, F-72025 Le Mans cedex (France)
Description
The high pressure behaviour of Li3Na3In2F12 garnet (Ia3-bard, Z=8) is studied up to 9.2 GPa at room temperature in diamond anvil cells using x-ray diffraction. Its equation of state to 9.2 GPa and the pressure dependences of the structural parameters to 4.07 GPa are determined from synchrotron angle-dispersive powder and laboratory single-crystal data, respectively. No indication of any structural phase transition in this material has been found up to 9.2 GPa. The fitting of the Murnaghan equation of state yields B0 = 36.2(5) GPa, B' = 5.38(18), and V0 = 2051.76(0.69) A3. The compressibility mechanism of Li3Na3In2F12 is attributed to the substantial bending of the In-F-Li angles linking the InF6 octahedra and LiF4 tetrahedra. The most compressible polyhedral units are the NaF8 triangulated dodecahedra. These results are discussed in relation to previous high pressure photoluminescence measurements and compared with the high pressure behaviour of silicate garnets
Availability note (English)
Available online at http://stacks.iop.org/0953-8984/18/2915/cm6_10_014.pdf or at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-8984/18/2915/cm6_10_014.pdf;
- DOI
- 10.1088/0953-8984/18/10/014;
- PII
- S0953-8984(06)12527-8;
Publishing Information
- Journal Title
- Journal of Physics. Condensed Matter
- Journal Volume
- 18
- Journal Issue
- 10
- Journal Page Range
- p. 2915-2924
- ISSN
- 0953-8984
- CODEN
- JCOMEL
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37061306
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- COMPRESSIBILITY; DIAMONDS; EQUATIONS OF STATE; GARNETS; INDIUM FLUORIDES; LITHIUM COMPOUNDS; MONOCRYSTALS; PHASE TRANSFORMATIONS; PHOTOLUMINESCENCE; POWDERS; PRESSURE DEPENDENCE; PRESSURE RANGE GIGA PA; SILICATES; SODIUM COMPOUNDS; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALI METAL COMPOUNDS; CARBON; COHERENT SCATTERING; CRYSTALS; DIFFRACTION; ELEMENTS; EMISSION; EQUATIONS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; INDIUM COMPOUNDS; LUMINESCENCE; MECHANICAL PROPERTIES; MINERALS; NONMETALS; OXYGEN COMPOUNDS; PHOTON EMISSION; PRESSURE RANGE; SCATTERING; SILICATE MINERALS; SILICON COMPOUNDS