Spin dependent tunnel junctions aimed for storage element in MRAM cells wer
e switched between low and high resistance states using 20 ns current pulse
s on two perpendicular conductors. Switching was done in quasi static mode
using an external field and dynamically with field pulses created on chip.
For 20 ns pulsewidths the introduction of a delay between the two pulses pr
omotes the switching at lower fields and reduces the dispersion in remanent
resistance values after switching.