Ferromagnetic resonance studies of strain tuned Bi:YIG films.

Bismuth-doped Yttrium iron garnet (Bi:YIG) thin films known for large magneto-optical activity with low losses still need to get probed for its magnetization dynamics. We demonstrate a controlled tuning of magnetocrystalline anisotropy in Bi-doped YFeO (Bi:YIG) films of high crystalline quality using growth induced epitaxial strain on [1 1 1]-oriented GdGaO (GGG) substrate. We optimize a growth protocol to get thick highly-strained epitaxial films showing large magneto-crystalline anisotropy, compare to thin films prepared using a different protocol.