Some additional hysteresis parameters for a natural (titano)magnetite with known grain size
Open Access
- 1 October 1996
- journal article
- Published by American Geophysical Union (AGU) in Geophysical Research Letters
- Vol. 23 (20) , 2803-2806
Abstract
The grain‐size dependence (250 down to r/Ms, Hc, Hcr, Hcr/Hc) three additional hysteresis parameters (MDFhys, MIFhys and χhys) were obtained from the loops (von Dobeneck, 1993). The classical hysteresis parameters agree well with data of Hartstra (1982), indicating that the small sample size of the AGM specimens does not hinder acquisition of meaningful data. The additional hysteresis parameters seem to depend on mineralogical composition but show little grain‐size dependence. χhys/χlf is ∼1.6 for coarse grain‐size fractions and decreases with grain size in fine fractions. The onset of the decrease corresponds to the PSD‐MD transition.Keywords
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