Woltersdorf, Georg and Back, Christian H.
Microwave assisted switching of single domain Ni80Fe20 elements.
Physical Review Letters (PRL) 99 (22), p. 227207.
We study the switching behavior of thin single domain magnetic elements in the presence of microwave excitation. The application of a microwave
field strongly reduces the coercivity of the elements. We show that
this effect is most profound at the ferromagnetic resonance frequency
of the elements. Observations using time-resolved magneto-optic Kerr
microscopy in combination with pulsed microwave excitation further
support that the microwave assisted switching process is indeed based
on the coherent motion of the magnetization.