The exchange interaction between FM and AFM materials
When the ferromagnetic (FM) materials are contacted with antiferromagnetic (AFM) materials, the magnetic properties of FM materials are drastically modified after a special procedure of heat treatment in presence of strong magnetic field. A remarkable phenomenon is the exchange anisotropy. The exchange anisotropy was first discovered in Co/CoO particles by Meiklejohn and Bean [1–3] in 1956. The Co particles revealed a unidirectional anisotropy and a strictly different hysteresis loop comparing to single Co material was observed. In recent years the exchange anisotropy has found many interesting applications. In section 1.1 it briefly introduces the associated phenomena and their applications. Several models have proposed to explain the mechanism of exchange interaction. They are briefly described in section 1.2. In last section 1.3 it is devoted to describe the magnetic structures of NiO(001) single crystals and Fe/NiO(001) systems which were used in our experiments.
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Hello, my name is Dr Abderrahmane Reggad. I'm a 51 year old and I am a researcher in materials' sciences.
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