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A Novel Technique For Microstructure Characterization Of Garnet Films, P.C. Wo, P.R. Munroe, Mikhail Vasiliev, Zonghan Xie, Kamal Alameh, V.A. Kotov

Mikhail Vasiliev

Bismuth-substituted iron garnet exhibits remarkable magneto-optical properties in magnetic photonic crystal (MPC) structures, and has the potential to improve performance in optical integrated circuits for communication networks and optical sensing applications. The microstructure and thickness of these garnet films has a strong influence over their optical, magnetic and magneto-optic (MO) properties. The thickness of these films has been measured indirectly via optical interference and ellipsometry, which are unable to map thickness variations due to surface roughness of both the film and the substrate. However, little direct observation has been carried out to provide detailed information about the microstructure of the …