The microstructure and domain structure of multiphase oxidized titanomagnetites

Details The microstructure and domain structure of multiphase oxidized titanomagnetites The microstructure and domain structure of multiphase oxidized titanomagnetites

Mar 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pepi...70..243g&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 70, Issue 3-4, p. 243-247.

Physics

3

Scientific paper

An estimation of the domain state of 15 natural and synthetic samples containing both homogeneous and multiphase oxidized titanomagnetites was made by means of Jrs/Js and Hcr/Hc ratios, the Lowrie-Fuller criterion, the thermomagnetic criterion, F criterion and the Preisach diagram. The Jrs/Js and Hcr/Hc ratios and the Lowrie-Fuller criterion are shown to be not sufficiently informative for a determination of the domain state. In the case where the lamellae thickness became thinner than 0.1 μm, titanomagnetite grains demonstrate multidomain behaviour independent of the size of the interlamellar regions (cells). If the lamellae become thicker than 0.1 μm the domain state depends on the size of the cells. Single-domain behaviour is obtained for a cell size less than 1 × 1 μm in agreement with the results of others, larger cells have multidomain properties.

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