TMR ratio and coercivity as a function of annealing time for a single MTJ junction annealed at .
Measured MR loops of a MTJ junction annealed for different times at .
The linear region in MR loops as a function of annealing time. The TMR ratios are also labeled.
Measured MR loops of an MTJ junction annealed for 20 min at , is the angle between the applied magnetic field and the pinning direction. The solid line is the fitting based on the superparamagnetism theory.
Conductances in parallel and antiparallel states as a function of annealing time for the MTJ used in Fig. 1 annealed at . The inserted picture shows the I–V curves of another MTJ junction annealed at the same temperature for 1 and 40 min.
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