Paper Title:
The Pyrrhotite 32 K Magnetic Transition
  Abstract

Pyrrhotite [1] is a common ferrimagnetic mineral in terrestrial rocks and has been identified recently as the major remanence carrier in Martian rocks, as in SNC (Shergotty-Nakhla-Chassigny) type meteorites. This compound undergoes a low temperature magnetic transition around 32 K with a change in the natural magnetic remanence [2]. This transition is going to be of growing importance in paleomagnetism and rock magnetism. To determine the structure change at 32K neutron diffraction was performed on two crystal samples at 50K and 20K (D10-ILL). Based on the magnetic torque measurements, performed on the same samples, a model of low-temperature triclinic structure was build. This model, explains previous Mössbauer experiments [4], the torque measurements, the magneto-crystalline anisotropy decreasing.

  Info
Periodical
Solid State Phenomena (Volume 170)
Edited by
J.-L. Bobet, B. Chevalier and D. Fruchart
Pages
174-179
DOI
10.4028/www.scientific.net/SSP.170.174
Citation
P. Wolfers, G. Fillion, B. Ouladdiaf, R. Ballou, P. Rochette, "The Pyrrhotite 32 K Magnetic Transition", Solid State Phenomena, Vol. 170, pp. 174-179, 2011
Online since
April 2011
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Price
$32.00
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