Alpha-Hematite: Stable Remanence and Memory

Details Alpha-Hematite: Stable Remanence and Memory Alpha-Hematite: Stable Remanence and Memory

May 1967

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1967sci...156.1130s&link_type=abstract

Science, Volume 156, Issue 3778, pp. 1130-1133

Physics

15

Scientific paper

Experimental evidence suggests that the magnetization of α -Fe2O3 consists of a soft spin-canted moment and a hard defect moment. The former is observed in the range -20 degrees to 675 degrees C; the latter is maintained across the transitions that bound the temperature range of the detectable spin-canted moment and is lost at the true Neel point of α -Fe2O3 of 725 degrees C. Both memory and the highest coercivity fraction of remanence in α -Fe2O3 are due to the defect moment.

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