The magnetic properties (phase diagram, magnetization curve, spin correlation functions, internal energy and magnetic specific heat) of a decorated ferrimagnetic square lattice composed of three magnetic atoms are investigated on the basis of the differential technique. The system can show many...

The critical temperature and the compensation temperature in a cylindrical Ising nanowire (or nanotube) with a negative interlayer coupling at the surface are investigated by the use of both the effective-field theory with correlations and the shell-core concept. Particular emphasis is given to...

The phase diagrams and magnetizations of two nanosystems (nanotube and nanowire) with a dilution at the surface are investigated by the use of the effective field theory with correlations. In particular, the effects of interlayer coupling between the surface and the core on them are discussed...