Electronic Resource
Oxford, UK
:
Blackwell Publishing Ltd
Geophysical journal international
124 (1996), S. 0
ISSN:
1365-246X
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Geosciences
Notes:
By using the Bitter method, we have observed the magnetic domain structures of natural titanomaghemite grains and magnetite crystals (0.5–10 μm) that were grown in a glass ceramic matrix. The observations were carried out in a range of applied magnetic fields and were correlated to the hysteresis properties of the bulk samples. Our observations show that simple, lamellar structures cannot explain the high-field hysteresis behaviour in either the titanomaghemite or the magnetite sample. This high-field behaviour is probably dominated by complicated, stress-influenced domain structures and rotation processes. A plot of the number of lamellar domains observed in magnetite grains versus their grain size yields a single-domain to two-domain transition size of 0.25 μm.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-246X.1996.tb06353.x
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