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FMR thermomagnetic studies up to 900°C of lunar soils and potential magnetic analogues
Author(s) -
Morris Richard V.,
Gibbons Rex V.,
Hörz Friedrich
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/gl002i010p00461
Subject(s) - thermomagnetic convection , magnetite , curie temperature , superparamagnetism , soil water , curie , materials science , lunar soil , nuclear magnetic resonance , ferromagnetism , mineralogy , geology , condensed matter physics , magnetization , metallurgy , soil science , magnetic field , physics , quantum mechanics
Using a recently developed furnace, ferromagnetic resonance (FMR) thermomagnetic studies up to 900°C were employed to measure the Curie points of the superparamagnetic (SP) and single domain (SD) particles in lunar soils and potential magnetic analogue materials. Based on measured Curie points of 775±10°C, the SP and SD particles in lunar soils 10084‐853, 12070‐29, 14161‐46, and 67010‐4 are essentially pure metallic Fe. Synthetic and terrestrial samples containing magnetite, titanomaghemites, and magnetite‐like particles have measured Curie points <600°C are thus not magnetic analogues of lunar soils.