  The magnetization of a planar heterostructure of periodically alternating
type-II superconductor and soft-magnet strips exposed to a transverse external
magnetic field is studied. An integral equation governing the sheet current
distribution in the Meissner state of the superconductor constituents is
derived. The field of complete penetration of magnetic flux in the critical
state of the superconductor constituents is calculated for different widths of
the superconductor and the soft-magnet constituents and a range of values of
the relative permeability of the soft-magnet constituents.
