Exchange Anisotropy Memory Effect
- 1 August 1960
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 31 (8) , 1388-1391
- https://doi.org/10.1063/1.1735848
Abstract
A magnetic memory effect is observed in a low Curie point ferrimagnetic spinel (∼NiFe0.15Cr1.85O4) containing a coherent antiferromagnetic impurity (NiO) with a high Néel point. It is explained in terms of the Meiklejohn‐Bean exchange anisotropy coupling the two phases. The past magnetic history is remembered in the spontaneous reacquisition of a fraction of the past remanent state despite prolonged storage at temperatures above the ferrimagnetic Curie point. A feature of the explanation is the condition that antiferromagnetic domains in NiO rotate irreversibly in accessible fields.This publication has 7 references indexed in Scilit:
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