Characterization of thin magnetic materials for high frequency applications

Magnetic materials are fundamental part of non-reciprocal microwave components such as isolators and circulators. In order to improve the effect of the isolation, new materials with magnetic anisotropy were studied such as composites, but the determination of their magnetic properties is still a non-trivial mission. While the miniaturization of these microwave components is becoming more compulsory, a new characterization method suitable for thin magnetic layers is presented. The described technique allows the estimation of diagonal and extra-diagonal components of the permeability tensor.