  Here we propose a magnetophotonic structure for the layer-selective
magnetization switching with ultrashort laser pulses of different wavelengths.
It is based on a chirped magnetophotonic crystal (MPC) containing magnetic
GdFeCo and nonmagnetic dielectric layers. At each operating wavelength the
laser pulses heat up to necessary level only one GdFeCo layer that leads to its
magnetization reversal without any impact on the magnetization of the other
layers. Moreover, magneto-optical reading of the MPC magnetization state is
discussed. Lateral dimensions of the considered MPC can be made small enough to
operate as a unit cell for data storage.
