Titanomagnetites prepared at different oxidation conditions: Influence of magnetite-rich inclusions |
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| Authors: | AA Rahman LG Parry |
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| Institution: | School of Physics, The University of New South Wales, Sydney, N.S.W. Australia |
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| Abstract: | Synthetic titanomagnetites prepared at 1300°C at different oxidation potentials, although giving only spinel-type X-ray reflections, were found to contain a small amount of included material with a Curie point above that for the bulk material. Specimens, comprising either dispersed sized grains, or polycrystalline spherical aggregates of grains, develop thermoremanent moments which are dependent upon the presence of the inclusions. The magnetization of the inclusions is revealed by thermal demagnetization experiments, and the experimental results are compared with the effects expected to arise from magnetic shielding by the matrix titanomagnetite. |
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