Study of a set of micrometeorites from Antarctica using magnetic and ESR methods coupled with micro-XRF

A collection of iron-rich micrometeorites from Antarctica have been investigated using electron spin resonance (ESR) and conventional magnetic methods to establish a complete magnetic codification of their specific characteristics. Due to the high selectivity of the ESR, the spectra show that the am...

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Bibliographic Details
Published in:Journal of Magnetism and Magnetic Materials
Main Authors: Marfaing J, Rochette P, Pellerey P, Chaurand P, Suavet C, FOLCO, LUIGI
Other Authors: Marfaing, J, Rochette, P, Pellerey, P, Chaurand, P, Suavet, C, Folco, Luigi
Format: Article in Journal/Newspaper
Language:English
Published: 2008
Subjects:
Antarc*
Antarctica
Online Access:http://hdl.handle.net/11568/127008
https://doi.org/10.1016/j.jmmm.2008.01.037
Description
Summary:A collection of iron-rich micrometeorites from Antarctica have been investigated using electron spin resonance (ESR) and conventional magnetic methods to establish a complete magnetic codification of their specific characteristics. Due to the high selectivity of the ESR, the spectra show that the amount and nature of the magnetic impurities contained in these tiny-sized samples, mainly Ni and Cr ions, significantly modify their ESR responses. This result provides a criterion, the Ni/Cr content (identified by spectroscopy), useful for a faithful classification of this class of extraterrestrial particles with close magnetic properties. We attempt to separate the contribution of the different magnetic ions in the ESR response. This method can be easily extended to other magnetic impurities.

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