Correlation between GMI effect and domain structure in electrodeposited Co–P tubes

Abstract Magnetic microtubes of amorphous Co 90 P 10 have been electrodeposited over cylindrical Cu substrates. The samples exhibit radial anisotropy, as deduced from hysteresis loops and magnetic force microscopy images. In this work, the evolution of both the domain structure and the giant magneto-impedance behavior in the MHz frequency range with the magnetic layer thickness is analyzed.