High Temperature Redox-Reactions of Co:α-Al2O3

  • A. Schweiger
  • Hs. H. Günthard


Cobalt doped sapphire is shown to undergo reversible redox reactions by treatment of the system in hydrogen and oxygen atmospheres above 1100°C. At temperatures above 1550°C irreversible formation of new phases of the spinel type destroy the reversibility of the redox process. The reduction


Redox Process Infrared Absorption Infrared Absorption Spectrum Magnetic Hyperfine ENDOR Spectrum 
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  1. 1.
    H. Blum, R. Frey, Hs.H. Günthard, Tae-Kyu Ha, Chem. Phys. 2, 262 (1973)CrossRefGoogle Scholar
  2. 2.
    G.M. Zverev and A.M. Prokhorov, Sov. Phys. JETP 9, 451 (1969)Google Scholar
  3. G.M. Zverev and A.M. Prokhorov, Sov.Phys JETP 12, 41 (1961)Google Scholar
  4. G.M. Zverev and A.M. Prokhorov, JETP 36, 647 (1959)Google Scholar
  5. 3.
    B. Gächter, H. Blum and Hs.H. Günthard, Chem.Phys 1, 45 (1973)CrossRefGoogle Scholar
  6. 4.
    International Tables of X-ray Crystallography Vol 1 (The Kynoch Press, Birmingham 1952), Wykoff NotationGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1977

Authors and Affiliations

  • A. Schweiger
    • 1
  • Hs. H. Günthard
    • 1
  1. 1.Laboratory for Physical ChemistryETHZurichSwitzerland

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