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Ferromagnetic phase‐mass equivalence and lunar sample magnetic remanence
Author(s) -
Wasilewski Peter J.
Publication year - 1975
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl002i003p00093
Subject(s) - remanence , demagnetizing field , spheres , geology , rock magnetism , lunar soil , ferromagnetism , coercivity , magnetization , intensity (physics) , materials science , phase (matter) , mineralogy , condensed matter physics , magnetic field , optics , physics , quantum mechanics , astronomy
Man‐made alloy spheres (∼300 µm) simulating the compositions of particles found in the lunar soil and weighing approximately 10 mg. are shown to be equivalent, insofar as remanence intensity and demagnetization stability are concerned, to ≳ 10 10 submicrometer spherical iron particles. The large particles (≳100 µm) not only contain large stable magnetic remanence, but when the polished surfaces of these particles are etched and carefully studied, they provide useful petrogenetic information, imply the mechanism of magnetization, the time‐temperature history, and outline the format for possible paleointensity analysis. The intensity and stability of the remanence in these large spheres is related to the microstructure developed during rapid cooling.