Magnetic properties of synthetic titanomagnetites

Details Magnetic properties of synthetic titanomagnetites Magnetic properties of synthetic titanomagnetites

Dec 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pepi...30..334z&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 30, Issue 4, p. 334-334.

Physics

Scientific paper

Magnetic properties and crystal structure parameters of synthetic solid solutions Fe3O4-Fe3TiO4, Fe2O4-MgFe2O4 and Fe3O4-Mg2TiO4 have been studied. Basic regularities in the behaviour of saturation magnetisation (Is), Curie temperature (TC) and cubic lattice parameter a during the substitution of Ti and Mg ions for Fe ions have been found. As the concentration of Ti ions increases, Is reduces from 70 Gs.cm3 g-1 to 0, TC changes from 580 to 130°C and a from 8.391 to 8.520 Å. Growth of the Mg concentration leads to changes in Is to 19.8 Gs.cm3, g-1, TC, to 440°C and a, to 8.360 Å. The full Fe ions substitution gives ``a''=8.440 Å.
Chemical compositions of the samples, in which the valency variation of Fe ions at oxidation leads to an increase in susceptibility and TC, have been determined.

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