An evaluation of permeability for striped thin films in the gigahertz range

We developed the fully automatic permeameter which is made of driving plates and shielded loop coil available in 1 MHz–3GHz. We clarified the sensitivity of the permeameter and the sensitivity can be explained by an uncertainty of network analyzer. We evaluate the permeability of striped CoNbZr films (50, 20, 10 μm wide). A reasonable relation between permeability spectrum and domain observations can be demonstrated.