Magnetic microtubes of amorphous Co90P10 have been electrodeposited over cy
lindrical Gu substrates. The samples exhibit radial anisotropy, as deduced
from hysteresis loops and magnetic force microscopy images. In this work, t
he evolution of both the domain structure and the giant magneto-impedance b
ehavior in the MHz frequency range with the magnetic layer thickness is ana
lyzed. (C) 2000 Elsevier Science B.V. All rights reserved.