Abstract
Structure, electrical, magnetic and magnetoresistive properties of (CoFeZr)х(MgF2)100−х thin film composites have been investigated in a wide range of metal phase concentration (14 at.% ≤ х ≤ 52 at.%). The composites were studied in the initial state and after heat treatment at different temperatures up to 350°C. The magnetoresistance of the samples in initial state reached 3.25 % in a magnetic field of 10 kOe. It was established that the composites magnetoresistance and magnetic properties are steady against thermal heating up to 350°C. It is assumed that the stability of the composites properties against annealing is due to the presence of zirconium atoms dissolved in the dielectric matrix.
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