Wave front reversal of nonreciprocal surface dipolar spin waves

The process of wave front reversal for nonreciprocal magnetostatic surface waves (MSSWs), propagating in ferromagnetic yttrium iron garnet films, has been studied theoretically and experimentally. The efficiency of wave front reversal for nonreciprocal MSSWs turned out to be approximately ten times smaller than for reciprocal backward volume magnetostatic waves under similar conditions. (C) 2006 American Institute of Physics.