Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999geoji.138..717f&link_type=abstract
Geophysical Journal International, Volume 138, Issue 3, pp. 717-726.
Astronomy and Astrophysics
Astronomy
7
Magnetic Domain, Remanent Magnetization, Rock Magnetism
Scientific paper
Models of uniaxial hard magnetic particles show that irregularly shaped grains possess a considerable equilibrium remanence due to domain imbalance. This remanence decreases approximately as L^- 1 with grain size L and is very stable with respect to alternating field and thermal demagnetization. It is therefore likely to be a major source of pseudo-single-domain remanence in rocks. Using the methods of domain theory, the range of possible remanences in irregularly shaped uniaxial particles with less than five domains is investigated. Even for slightly asymmetric particle geometries the remanence decreases monotonically with grain size. Most two-domain remanences lie above 0.3 M_s. The behaviour of the domain imbalance moments seems to be largely independent of details of the shape asymmetry. Since domain imbalance is a global equilibrium remanence, local remanences due to wall pinning effects can be superimposed with-out destroying it. This can explain the fact that the remanence of pseudo-single-domain particles appears to be a mixture of independent single- and multidomain-like components.
Fabian Karl
Hubert Alex
No associations
LandOfFree
Shape-induced pseudo-single-domain remanence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Shape-induced pseudo-single-domain remanence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shape-induced pseudo-single-domain remanence will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1558549