ICAME 2003 pp 459-464 | Cite as

Variation of Some Physical Properties of Brownmillerite Doped with a Transition Metal Oxide

Conference paper


Cement clinker is the main component of Portland cement. It is composed of four main phases. One of them is the brownmillerite or the ferrite phase of cement clinker. It is prepared according to the formula (4CaO)(Al2O3)(Fe2O3)l−x (M) x , where M represents transition metal oxides (TMO): TiO2, Cr2O3, Mn2O3 and WO3, where x = 1, 2, 3, 4 and 5 mol%. Each mixture was fired at 1300°C for 30 minutes in a platinum crucible. The samples were pulverized for Mössbauer spectroscopy, X-ray diffraction and a.c. conductivity measurements. A shift in the position of the characterized peaks of pure brownmillerite appears in the X-ray diffraction patterns of brownmillerite doped with a transition metal oxide. The a.c. conductivity showed a maximum value for the samples containing 3 mol% TiO2, Cr2O3 and Mn2O3, and 2 mol% WO3. The Mössbauer parameters for the sample containing 5 mol% M showed a gradual increase in the isomer shift values. The number of electrons in d-orbital for the doped transition atoms, as the nearest neighbor atoms increased from 2 to 5 electrons. The hyperfine magnetic field at Fe3+ (Oh) iron nucleus decreases with increasing M content. This may be due to the decrease of the particle size of brownmillerite.

Key words

 brownmillerite physical properties cement Mössbauer 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Jawed, I. and Skainy, J., Cern. Conc. Res. 7 (1977), 719.CrossRefGoogle Scholar
  2. 2.
    Odler, I. and Wonnemann, R., ibid 13 (1983), 477.Google Scholar
  3. 3.
    Hassaan, M. Y., Moutawie, M. A. and Eissa, N. A., Hyp. Interact. 46 (1989), 739.ADSCrossRefGoogle Scholar
  4. 4.
    Hassaan, M. Y., Eissa, N. A. and Salah, S. H., TIZ International Powder Magazine 114 (5) (1990), 346.Google Scholar
  5. 5.
    Odler, I. and Abdul-Maula, S., J. Amer. Ceram. Society 63 (11-12) (1980), 654.CrossRefGoogle Scholar
  6. 6.
    Odler, I. and Schmidt, O., ibid 63 (1-2) (1988), 13.Google Scholar
  7. 7.
    Hassaan, M. Y., Panteleev, D. and Salah, S. H., Hyp. Interact. 71 (1992), 1389.Google Scholar
  8. 8.
    Tareev, B., Physics of Dielectric Materials, Mir Publishers, Moscow, 1979.Google Scholar
  9. 9.
    Sayer, M. and Mansingh, A., Phys. Rev. Rev. B 6 (1972), 4629.Google Scholar
  10. 10.
    Bhide, V. J., Mössbauer Effect and Its Applications, McGraw-Hill, New Dellhi, 1973, p. 182.Google Scholar
  11. 11.
    Salah, S. H., PhD Thesis, Al-Azhar University, Cairo, Egypt, 1979.Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  1. 1.Physics Department, Faculty of ScienceAl-Azhar UniversityCairoEgypt

Personalised recommendations