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Non-stoichiometric magnetite and maghemite in the mature teeth of the chitonAcanthopleura hirtosa

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Abstract

Mature radula pieces from the chitonAcanthopleura hirtosa were studied using Mössbauer spectroscopy. The magnetite present in the radulae was found to have a distribution of Verwey transition temperatures in the range 85–100K. It was deduced that the magnetite was non-stoichiometric with an average formula Fe2.98O3. About 10% of the Fe in the radulae was in the form of maghemite and about 19% was in the form of paramagnetic or superparamagnetic phases.

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Authors and Affiliations

  1. School of Mathematical and Physical Sciences, Murdoch University, 6150, Perth, W.A., Australia

    T. G. St. Pierre, L. A. Evans & J. Webb

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  1. T. G. St. Pierre
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  2. L. A. Evans
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  3. J. Webb
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St. Pierre, T.G., Evans, L.A. & Webb, J. Non-stoichiometric magnetite and maghemite in the mature teeth of the chitonAcanthopleura hirtosa . Hyperfine Interact 71, 1275–1278 (1992). https://doi.org/10.1007/BF02397316

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