The Korean Journal of Ceramics

The Korean Ceramic Society (한국세라믹학회)
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A Thermogravimetric Study of the Non-stoichiometry of Iron-Doped Nicked Oxide$(Ni_{1-x}Fe_x)1-{\delta}$O

  • Krafft, Kunt N. (Institute of Physical Chemistry and Electrochemistry, University of Hannover) ;
  • Martin, Manfred (Institute of Physical Chemistry, Darmstadt University of Technology, Petersenstr)
  • Published : 1998.06.01
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Abstract

We have measured changes of the non-stoichiometry, $\Delta\delta$, in Fe-doped nicked oxide , by thermogravimetry for four iron fractions, x=0.01, 0.031, 0.057 and 0.10, and three temperatures, T=1273, 1373 and 1473 K. The obtained data can be modelled by a defect structure in which substitutional trivalent iron ions, FeNi, are compensated by cation vacancies, $V_{Ni}$", and (4:1)-clusters. These clusters consist of tetravalent interstitial iron, $Fe_i\;^4$

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References

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