Figure 3

(a) Frequency dependence of dynamic permeability evaluated through the short-circuited MSL method. The maximum frequency of irradiated electromagnetic wave is 30 GHz. Frequency dependences of (b) the complex permittivity and (c) the complex permeability measured by means of a network analyzer in the frequency range of 0.1–9 GHz. For these measurements, the present Ni_0.5Zn_0.5Fe₂O₄ powder/polymer composite sheet was fabricated as a toroidal shape. (d) The \({\text{tan}}\delta_{\varepsilon } = \frac{{\varepsilon ^{\prime \prime }}}{{\varepsilon {\prime }}}\), and (e) \({\text{tan}}\delta_{\mu } = \frac{{\mu ^{\prime \prime }}}{{\mu {\prime }}}\), respectively, calculated using the results obtained from (b) and (c), respectively.