Magnetization Changes with Decoration in an Ising Nanoparticle with High Critical Temperature

The phase diagram and the thermal variations of total magnetization in Ising nanoparticles with high critical temperature are investigated by decorating the magnetic atoms to the basic nanoparticle, in order to clarify how they may change with the increase of decoration. The thermal variations of magnetizations in nanoparticles under an applied magnetic field are also studied. These are examined by using the effective field theory with correlations. A lot of characteristic phenomena are reported.