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Growth of large (1 mm) MgSiO3 perovskite single crystals: A thermal gradient method at ultrahigh pressure

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Published/Copyright: April 1, 2015
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American Mineralogist
From the journal American Mineralogist Volume 92 Issue 10

Abstract

Large single crystals of MgSiO3 perovskite were successfully synthesized by a thermal gradient method at 24 GPa and 1500 °C. This was achieved by an improvement of high-pressure synthesis technique that allowed us to grow single crystals under such ultrahigh-pressure conditions in relatively large volumes (e.g., 10 mm3). Since crystal growth is hindered by neighboring crystals, the nucleation density was suppressed by reducing the thermal gradient to 20 °C/mm, permitting an increase in free space for large crystal growth. KHCO3-Mg(OH)2 solvent can be used to grow perovskite crystals. However, the carbonate solvent produces melt inclusions. Silicate sources with MgSiO3 composition produce stishovite inclusions, which in turn cause splitting of perovskite crystals. The formation of these inclusions is avoided by using H2O as a solvent and 85MgSiO3-15Mg2SiO4 as a silicate source. The H2O also allows homogeneous crystal growth, probably because of its low viscosity and high silicate solubility. High-quality single crystals larger than 1 mm were successfully synthesized through these technical developments.

Keywords: MgSiO3; perovskite; single-crystal growth; high pressure; temperature gradient method; growth from solution
Received: 2006-8-10
Accepted: 2007-5-16
Published Online: 2015-4-1
Published in Print: 2007-10-1

© 2015 by Walter de Gruyter Berlin/Boston

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  2. Solidification and microstructures of binary ice-I/hydrate eutectic aggregates
  3. A monazite oxygen isotope thermometer
  4. The albite fusion curve re-examined: New experiments and the high-pressure density and compressibility of high albite and NaAlSi3O8 liquid
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  12. Single-crystal structure refinement of diaspore at 50 GPa
  13. FTIR spectroscopy of Ti-rich pargasites from Lherz and the detection of O2- at the anionic O3 site in amphiboles
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  15. Acoustic dissipation associated with phase transitions in lawsonite, CaAl2Si2O7(OH)2·H2O
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  20. Ion exchange equilibrium and structural changes in clinoptilolite irradiated with β- and γ-radiation: Monovalent cations
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  22. Growth of large (1 mm) MgSiO3 perovskite single crystals: A thermal gradient method at ultrahigh pressure
  23. Carbon is not required during crystallization to produce ferrobasalts/ferrodiorites (FTP rocks)
  24. Letter: Meridianiite: A new mineral species observed on Earth and predicted to exist on Mars
  25. Letter: Equations of state of CaIrO3 perovskite and post-perovskite phases
  26. Letter: Hydrogen-carbonate ion in synthetic high-pressure apatite
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https://doi.org/10.2138/am.2007.2415
Keywords for this article
MgSiO3; perovskite; single-crystal growth; high pressure; temperature gradient method; growth from solution

Articles in the same Issue

  1. Ferric iron in Al-bearing akimotoite coexisting with iron-nickel metal in a shock-melt vein in an L-6 chondrite
  2. Solidification and microstructures of binary ice-I/hydrate eutectic aggregates
  3. A monazite oxygen isotope thermometer
  4. The albite fusion curve re-examined: New experiments and the high-pressure density and compressibility of high albite and NaAlSi3O8 liquid
  5. XRD and HRTEM analyses of stacking structures in sudoite, di-trioctahedral chlorite
  6. Vibrational dynamics in H+-substituted forsterite: A first-principles molecular dynamics study
  7. Fluorophlogopite from Biancavilla (Mt. Etna, Sicily, Italy): Crystal structure and crystal chemistry of a new F-dominant analog of phlogopite
  8. Pressure-induced over-hydration of thomsonite: A synchrotron powder diffraction study
  9. High-pressure optical spectroscopy and X-ray diffraction studies on synthetic cobalt aluminum silicate garnet
  10. In situ observation of the decomposition of kyanite at high pressures and high temperatures
  11. Mineralogy and crystal structure of bouazzerite from Bou Azzer, Anti-Atlas, Morocco: Bi-As-Fe nanoclusters containing Fe3+ in trigonal prismatic coordination
  12. Single-crystal structure refinement of diaspore at 50 GPa
  13. FTIR spectroscopy of Ti-rich pargasites from Lherz and the detection of O2- at the anionic O3 site in amphiboles
  14. The relative stability of monazite and huttonite at 300 - 900 °C and 200 - 1000 MPa: Metasomatism and the propagation of metastable mineral phases
  15. Acoustic dissipation associated with phase transitions in lawsonite, CaAl2Si2O7(OH)2·H2O
  16. Magnetic anisotropy of carbonate minerals at room temperature and 77 K
  17. Non-ideality and defectivity of the åkermanite-gehlenite solid solution: An X-ray diffraction and TEM study
  18. The system Al2O3-P2O5-H2O at temperatures below 200 °C: Experimental data on the stability of variscite and metavariscite AlPO4·2H2O
  19. Low-pressure decomposition of chrysotile as a function of time and temperature
  20. Ion exchange equilibrium and structural changes in clinoptilolite irradiated with β- and γ-radiation: Monovalent cations
  21. Investigation of dioctahedral smectite hydration properties by modeling of X-ray diffraction profiles: Influence of layer charge and charge location
  22. Growth of large (1 mm) MgSiO3 perovskite single crystals: A thermal gradient method at ultrahigh pressure
  23. Carbon is not required during crystallization to produce ferrobasalts/ferrodiorites (FTP rocks)
  24. Letter: Meridianiite: A new mineral species observed on Earth and predicted to exist on Mars
  25. Letter: Equations of state of CaIrO3 perovskite and post-perovskite phases
  26. Letter: Hydrogen-carbonate ion in synthetic high-pressure apatite
  27. Letter: Effects of irradiation damage on the back-scattering of electrons: Silicon-implanted silicon
  28. Letter: High-precision oxygen isotope analysis of picogram samples reveals 2 μm gradients and slow diffusion in zircon
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