Temperature dependence of the reversal mechanism in spin-valve films
1999
The thermal behavior of spin valves (SVs) and exchange-coupled films has been investigated by in situ experiments in a Lorentz microscope. In situ magnetizing combined with in situ heating experiments have been performed during observation of the magnetization reversal of SV materials. A clear demonstration of the thermal effect on the reversal of the free layer is shown as well as a decrease of the exchange-bias pinning with increasing temperature. This latter effect results in the switching of the pinned layer near the blocking temperature.
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