2Song Y Y, Ordonez-Romero C L, Wu M Z. Millimeter wave notch filters based on ferromagnetic resonance in hexagonal barium ferrites [J]. Appl Phys Lett, 2009, 95: 142506.
3Capraro S, Rouiller T, Le Berre M, et al. Feasibility of an integrated self biased coplanar isolator with barium ferrite films [J]. IEEE Trans Comp Pack Techno, 2007, 30:411-415.
4Das J, Kalinikos B A, Barman A R, et al. Multifunctional dual-tunable low loss ferrite-ferroelctric hetero structures for microwave devices [J]. Appl Phys Lett, 2007, 91: 172516.