Home Inverse spinel structure of Co-doped gahnite
Article
Licensed
Unlicensed Requires Authentication

Inverse spinel structure of Co-doped gahnite

  • Jasminka Popović EMAIL logo , Emilija Tkalčec , Biserka Gržeta , Stanislav Kurajica and Boris Rakvin
Published/Copyright: April 1, 2015
Become an author with De Gruyter Brill
Author Information
American Mineralogist
From the journal American Mineralogist Volume 94 Issue 5-6

Abstract

Powder ZnAl2O4 (gahnite) samples doped with 0-100 at% Co were obtained by a sol-gel technique. X-ray powder diffraction was used to characterize the samples. Gahnite samples are cubic with the normal spinel structure, space group Fd3̄m. Cobalt doping caused a nonuniform increase of unit-cell parameter. The structure of the gahnite samples was refined by the Rietveld method. The location of Co2+ was determined by EPR spectroscopy. Cobalt doping of gahnite induces the inverse spinel structure at only 4 at% Co, and the inversion parameter increases with Co2+ doping level. Metal-oxide distances in the (Al,Co)O6 octahedra dominantly influence the unit-cell parameter of Co-doped gahnite

Keywords : Co-doped gahnite; spinel structure; X-ray powder diffraction; Rietveld method
Received: 2008-12-16
Accepted: 2009-2-3
Published Online: 2015-4-1
Published in Print: 2009-5-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Closure temperatures of intracrystalline ordering in anatectic and metamorphic hercynite, Fe2+Al2O4
  2. Arsenate substitution in hydroxylapatite: Structural characterization of the Ca5(PxAs1–xO4)3OH solid solution
  3. The crystal chemical role of Zn in alunite-type minerals: Structure refinements for kintoreite and zincian kintoreite
  4. Application of precession electron diffraction to the characterization of (021) twinning in pseudo-hexagonal coesite
  5. Structure, thermodynamic, and transport properties of molten Mg2SiO4: Molecular dynamics simulations and model EOS
  6. High-pressure behavior of åkermanite and gehlenite and phase stability of the normal structure in melilites
  7. Synchrotron-based speciation of chromium in an Oxisol from New Caledonia: Importance of secondary Fe-oxyhydroxides
  8. Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite
  9. The role of silver on the stabilization of the incommensurately modulated structure in calaverite, AuTe2
  10. Hydrogen zoning in zinc-bearing staurolite from a high-P, low-T diasporite (Samos, Greece): A combined EMP-SIMS-FIB-FTIR study
  11. Dmitryivanovite: A new high-pressure calcium aluminum oxide from the Northwest Africa 470 CH3 chondrite characterized using electron backscatter diffraction analysis
  12. Crystal chemistry of hydrous forsterite and its vibrational properties up to 41 GPa
  13. The geothermobarometric potential of tourmaline, based on experimental and natural data
  14. Inverse spinel structure of Co-doped gahnite
  15. Advances in understanding the structure of borosilicate glasses: A Raman spectroscopy study
  16. The occurrence of tetrahedrally coordinated Al and B in tourmaline: An 11B and 27Al MAS NMR study
  17. Accurate and precise lattice parameters by selected-area electron diffraction in the transmission electron microscope
  18. Two types of metamorphic monazite with contrasting La/Nd, Th, and Y signatures in an ultrahigh-pressure metapelite from the Pohorje Mountains, Slovenia: Indications for pressure-dependent REE exchange between apatite and monazite?
  19. Cs-exchange in birnessite: Reaction mechanisms inferred from time-resolved X-ray diffraction and transmission electron microscopy
  20. Crystal chemistry and radiation-induced amorphization of P-coffinite from the natural fission reactor at Bangombé, Gabon
  21. Letter. Tistarite, Ti2O3, a new refractory mineral from the Allende meteorite
  22. Letter. Davisite, CaScAlSiO6, a new pyroxene from the Allende meteorite
  23. Letter. The 4500 cm–1 infrared absorption band in hydrous aluminosilicate glasses is a combination band of the fundamental (Si,Al)-OH and O-H vibrations
https://doi.org/10.2138/am.2009.3173
Keywords for this article
Co-doped gahnite; spinel structure; X-ray powder diffraction; Rietveld method

Articles in the same Issue

  1. Closure temperatures of intracrystalline ordering in anatectic and metamorphic hercynite, Fe2+Al2O4
  2. Arsenate substitution in hydroxylapatite: Structural characterization of the Ca5(PxAs1–xO4)3OH solid solution
  3. The crystal chemical role of Zn in alunite-type minerals: Structure refinements for kintoreite and zincian kintoreite
  4. Application of precession electron diffraction to the characterization of (021) twinning in pseudo-hexagonal coesite
  5. Structure, thermodynamic, and transport properties of molten Mg2SiO4: Molecular dynamics simulations and model EOS
  6. High-pressure behavior of åkermanite and gehlenite and phase stability of the normal structure in melilites
  7. Synchrotron-based speciation of chromium in an Oxisol from New Caledonia: Importance of secondary Fe-oxyhydroxides
  8. Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite
  9. The role of silver on the stabilization of the incommensurately modulated structure in calaverite, AuTe2
  10. Hydrogen zoning in zinc-bearing staurolite from a high-P, low-T diasporite (Samos, Greece): A combined EMP-SIMS-FIB-FTIR study
  11. Dmitryivanovite: A new high-pressure calcium aluminum oxide from the Northwest Africa 470 CH3 chondrite characterized using electron backscatter diffraction analysis
  12. Crystal chemistry of hydrous forsterite and its vibrational properties up to 41 GPa
  13. The geothermobarometric potential of tourmaline, based on experimental and natural data
  14. Inverse spinel structure of Co-doped gahnite
  15. Advances in understanding the structure of borosilicate glasses: A Raman spectroscopy study
  16. The occurrence of tetrahedrally coordinated Al and B in tourmaline: An 11B and 27Al MAS NMR study
  17. Accurate and precise lattice parameters by selected-area electron diffraction in the transmission electron microscope
  18. Two types of metamorphic monazite with contrasting La/Nd, Th, and Y signatures in an ultrahigh-pressure metapelite from the Pohorje Mountains, Slovenia: Indications for pressure-dependent REE exchange between apatite and monazite?
  19. Cs-exchange in birnessite: Reaction mechanisms inferred from time-resolved X-ray diffraction and transmission electron microscopy
  20. Crystal chemistry and radiation-induced amorphization of P-coffinite from the natural fission reactor at Bangombé, Gabon
  21. Letter. Tistarite, Ti2O3, a new refractory mineral from the Allende meteorite
  22. Letter. Davisite, CaScAlSiO6, a new pyroxene from the Allende meteorite
  23. Letter. The 4500 cm–1 infrared absorption band in hydrous aluminosilicate glasses is a combination band of the fundamental (Si,Al)-OH and O-H vibrations
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2025 De Gruyter Brill
Downloaded on 19.9.2025 from https://www.degruyterbrill.com/document/doi/10.2138/am.2009.3173/html
Scroll to top button