Effect of Selective Thermomagnetic Treatment on Unidirectional Magnetic Anisotropy in FeNi/TbCo Films

Resumo

The effect of selective thermomagnetic treatment on the exchange interaction between magnetic layers in Fe₁₁Ni₈₉/Tb₃₀Co₇₀/Ti films has been investigated. Dependencies of the exchange bias field induced in the Fe₁₁Ni₈₉ layer on the annealing temperature have been obtained and interpreted. We consider structural modifications of the interface and stress-relaxation processes in the Fe₁₁Ni₈₉ layer to be the main reasons for the observed modifications of hysteresis properties.