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Tilt and buckling modes, and acoustic anisotropy in layers with post-perovskite connectivity

  • Ian P. Swainson EMAIL logo and André L. Yonkeu
Published/Copyright: April 1, 2015
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American Mineralogist
From the journal American Mineralogist Volume 92 Issue 5-6

Abstract

The effect of the anisotropic connectivity within the layers of the post-perovskite, CaIrO3, structure are examined using a Rigid Unit Mode and group theory approach, and possible commensurate tilt structures are given. It is shown that the anisotropic bonding of the sheet may give rise to preferred directions of buckling for such structures and anisotropy in the speed of sound.

Keywords: Post-perovskite; CaIrO3; tilt modes; layer structures; buckling modes; acoustic anisotropy
Received: 2006-9-20
Accepted: 2007-1-24
Published Online: 2015-4-1
Published in Print: 2007-5-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Single-crystal FTIR and X-ray study of vishnevite, ideally [Na6(SO4)][Na2(H2O)2](Si6Al6O24)
  2. Crystallographic texture and microstructure of terebratulide brachiopod shell calcite: An optimized materials design with hierarchical architecture
  3. High-temperature phase relations and topological constraints in the quaternary system MgO-Al2O3-SiO2-Cr2O3: An experimental study
  4. Tilt and buckling modes, and acoustic anisotropy in layers with post-perovskite connectivity
  5. Optical absorption study of natural garnets of almandine-skiagite composition showing intervalence Fe2+ + Fe3+ → Fe3+ + Fe2+ charge-transfer transition
  6. Deriving formation constants for aqueous metal complexes from XANES spectra: Zn2+ and Fe2+ chloride complexes in hypersaline solutions
  7. Birnessite polytype systematics and identiÞ cation by powder X-ray diffraction
  8. Improved measurement of fission-track annealing in apatite using c-axis projection
  9. Improved modeling of fission-track annealing in apatite
  10. Intercalibration of FTIR and SIMS for hydrogen measurements in glasses and nominally anhydrous minerals
  11. Order and miscibility in the otavite–magnesite solid solution
  12. An infrared investigation of the otavite-magnesite solid solution
  13. Partitioning of calcium, magnesium, and transition metals between olivine and melt governed by the structure of the silicate melt at ambient pressure
  14. The geometric effects of VFe2+ for VMg substitution on the crystal structures of the grandidierite-ominelite series
  15. The iron oxidation state of garnet by electron microprobe: Its determination with the flank method combined with major-element analysis
  16. Gram-Charlier development of the atomic displacement factors into mineral structures: The case of samsonite, Ag4MnSb2S6
  17. Superstructure of Challis mordenite with doubled monoclinic unit cell
  18. Biopyribole evolution during tremolite synthesis from dolomite and quartz in CO2-H2O fluid
  19. The evolution of diamond morphology in the process of dissolution: Experimental data
  20. The pearceite-polybasite group of minerals: Crystal chemistry and new nomenclature rules
  21. Determination of layer stacking microstructures and intralayer transition of illite polytypes by high-resolution transmission electron microscopy (HRTEM)
  22. Structural behavior of Al3+ in peralkaline, metaluminous, and peraluminous silicate melts and glasses at ambient pressure
  23. The crystal structure of ingersonite, Ca3Mn2+Sb45+O14, and its relationships with pyrochlore
  24. Chemical composition, statistical analysis of the unit cell, and electrostatic modeling of the structure of Al-saturated chlorite from metamorphosed rocks
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https://doi.org/10.2138/am.2007.2456
Keywords for this article
Post-perovskite; CaIrO3; tilt modes; layer structures; buckling modes; acoustic anisotropy

Articles in the same Issue

  1. Single-crystal FTIR and X-ray study of vishnevite, ideally [Na6(SO4)][Na2(H2O)2](Si6Al6O24)
  2. Crystallographic texture and microstructure of terebratulide brachiopod shell calcite: An optimized materials design with hierarchical architecture
  3. High-temperature phase relations and topological constraints in the quaternary system MgO-Al2O3-SiO2-Cr2O3: An experimental study
  4. Tilt and buckling modes, and acoustic anisotropy in layers with post-perovskite connectivity
  5. Optical absorption study of natural garnets of almandine-skiagite composition showing intervalence Fe2+ + Fe3+ → Fe3+ + Fe2+ charge-transfer transition
  6. Deriving formation constants for aqueous metal complexes from XANES spectra: Zn2+ and Fe2+ chloride complexes in hypersaline solutions
  7. Birnessite polytype systematics and identiÞ cation by powder X-ray diffraction
  8. Improved measurement of fission-track annealing in apatite using c-axis projection
  9. Improved modeling of fission-track annealing in apatite
  10. Intercalibration of FTIR and SIMS for hydrogen measurements in glasses and nominally anhydrous minerals
  11. Order and miscibility in the otavite–magnesite solid solution
  12. An infrared investigation of the otavite-magnesite solid solution
  13. Partitioning of calcium, magnesium, and transition metals between olivine and melt governed by the structure of the silicate melt at ambient pressure
  14. The geometric effects of VFe2+ for VMg substitution on the crystal structures of the grandidierite-ominelite series
  15. The iron oxidation state of garnet by electron microprobe: Its determination with the flank method combined with major-element analysis
  16. Gram-Charlier development of the atomic displacement factors into mineral structures: The case of samsonite, Ag4MnSb2S6
  17. Superstructure of Challis mordenite with doubled monoclinic unit cell
  18. Biopyribole evolution during tremolite synthesis from dolomite and quartz in CO2-H2O fluid
  19. The evolution of diamond morphology in the process of dissolution: Experimental data
  20. The pearceite-polybasite group of minerals: Crystal chemistry and new nomenclature rules
  21. Determination of layer stacking microstructures and intralayer transition of illite polytypes by high-resolution transmission electron microscopy (HRTEM)
  22. Structural behavior of Al3+ in peralkaline, metaluminous, and peraluminous silicate melts and glasses at ambient pressure
  23. The crystal structure of ingersonite, Ca3Mn2+Sb45+O14, and its relationships with pyrochlore
  24. Chemical composition, statistical analysis of the unit cell, and electrostatic modeling of the structure of Al-saturated chlorite from metamorphosed rocks
  25. XANES study of the oxidation state of Cr in lower mantle phases: Periclase and magnesium silicate perovskite
  26. Crystal chemistry of hydration in aluminous orthopyroxene
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