Nondispersive magnetostatic forward volume wave propagation in a double-layered yttrium-iron-garnet film structure with dielectric spacer

The present article reports a theoretical study of nondispersive magnetostatic forward volume wave (MSFVW) propagation in a double-layered yttrium-iron-garnet (YIG)-film structure consisting of two YIG films separated by a dielectric layer. Numerical computations are presented that show that a significant improvement in bandwidth for nondispersive MSFVW propagation can be obtained in the present separated double-layered YIG-film structure over the previously reported double-layered YIG-film geometry wherein the two YIG films were in direct contact. (C) 1999 American Institute of Physics. [S0021-8979(99)73808-9].