Open AccessResolution of ferrimagnetic and paramagnetic anisotropies in rocks, using combined low‐field and high‐field measurements
Author(s) -
Hrouda F.,
Jelínek V.
Publication year - 1990
Publication title -
geophysical journal international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0956-540X
DOI - 10.1111/j.1365-246x.1990.tb01753.x
Subject(s) - ferrimagnetism , anisotropy , saturation (graph theory) , condensed matter physics , paramagnetism , field (mathematics) , materials science , magnetic field , physics , magnetization , optics , mathematics , quantum mechanics , pure mathematics , combinatorics
SUMMARY A method of separation of ferrimagnetic and paramagnetic components of magnetic anisotropy from the total anisotropy is developed. From the anisotropy measurement of a specimen in a low field (susceptibility anisotropy) and from measurement in two high fields stronger than the saturation field of the ferrimagnetic fraction present, the following anisotropy components can be calculated: susceptibility anisotropy (field‐independent) of the paramagnetic fraction, low‐field (susceptibility) anisotropy of the ferrimagnetic fraction and high‐field anisotropy of the ferrimagnetic fraction. Errors possibly arising from imperfect saturation of the ferrimagnetic fraction in the field practically available are analysed.