Abstract
Highly unstable FeO is chemically passivated by incorporating Cr3+ ions by solid solution technique and forming FexO∶Cr3+ single phase material. XRD, chemical analysis and Mossbauer spectroscopy are used for the characterization of the freshly prepared as well as samples aged in the desiccator for nearly three months. Optimum concentration range — 0.25 to 0.75 mole% — of Cr2O3 has been found to be necessary for stabilizing FexO∶Cr3+. x is determined by chemical analysis. Mossbauer and XRD studies have confirmed the chemical passivation of unstable FeO.
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References
Landolt-Bornstein, Magnetic oxides and related compounds, New Series, Group III ed. K.H. Hellwege and A.N. Hellwege, Vol. 12, Part b (Springer-Verlag, New York 1980) pp. 2–7 and references cited therein.
P.D. Battle and A.K. Cheetham, J. Phys C: Solid State Phys. 12 (1979) 337.
M. Akimitsu, T. Mizoguchi, J. Akimitsu and S. Kimura, J. Phys. Chem. Solids.44 (1983) 497.
N.N. Greenwood and A.T. Howe, Part I–III, J. Chem. Soc. Dalton Trans. 1(1972) 110, 116, 122; N.N. Greenwood in Perspectives in Mossbauer spectroscopy, ed. S.G. Cohen and M. Pasternak (Plenum Press, New York, 1973) p. 27.
C.E. Deshpande and M.N.S. Murthy, Bull. Mater. Sci. 3 (1981) 261 and references cited therein.
W.L. Roth, Acta Cryst. 13 (1960) 40.
D.P. Johnson, Solid State Comms. 7 (1969) 1785.
C.E. Deshpande, S. Badrinarayanan and S.K. Date, J. Mater. Sci. Lett. 4 (1985) 922.
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NCL Communication No. 3905
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Shrotri, J.J., Deshpande, C.E., Date, S.K. et al. Chemical passivation of unstable FeO — A Mössbauer study. Hyperfine Interact 28, 733–736 (1986). https://doi.org/10.1007/BF02061550
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DOI: https://doi.org/10.1007/BF02061550