Remanent Magnetizations in Oxidized Olivine

Remanent Magnetisation in Hemo-Ilmenite

The natural remanent magnetisation of a crystal of South Norwegian hemoilmenite rock has been studied using neutron scattering to obtain knowledge on the sample’s origin-deposit’s contribution to magnetic anomalies of the Earth’s magnetic field. The sample consists of an ilmenite host (paramagnetic) with exsolution lamellae of hematite (canted antiferromagnetic), thereby having a large area of ...

Remanent magnetization in CoO antiferromagnetic nanoparticles

We report a study on the remanent magnetization Mr induced by field cooling across the ordering temperature TN in antiferromagnetic CoO nanoparticles with different sizes. The nanoparticles are composed by a structurally and magnetically ordered core and a structurally ordered and magnetically disordered shell with a thickness of about 2 nm. The ordered core has cell parameters, moments directi...

FIRST Ti-XANES ANALYSES OF OLIVINE IN AMOEBOID OLIVINE AGGREGATES

Olivine in kimberlites

What olivine, the neglected mineral, tells us about kimberlite petrogenesis N. T. Arndt, A. M. Boullier, J. P. Clement, M. Dubois, and D. Schissel OSUG, Univ. de Grenoble, BP 53, Grenoble cedex 38401, France U.F.R. des Sciences de la Terre, UMR 8110 Processus et Bilans des Domaines Sédimentaires, 59655 Villneuve d’Ascq, France BHP Billiton World Exploration, Inc., 1400-1111 West Georgia Street,...

Remanent magnetization of fine particles

2014 A brief review is given of some calculations of the remanent magnetization of fine particles. The remanence after previous saturation has been calculated for a number of different types of anisotropy. A discussion is also given of remanence curves attained after application of D. C. or A. C. fields, and relations between such curves are pointed out. LE JOURNAL DE PIIYSIQUE ET LE RADIUM TOM...