Surface effects on a multilayer and multisublattice cubic nanowire with core/shell

• A multilayer and multisublattice cubic nanowire with core/shell is proposed.
• Effects of surface on the magnetic properties of the system were examined.
• Two compensation points appear for certain values of the surface parameters.

A multilayer and multisublattice cubic nanowire is studied based on a shell/core and the effective-field theory. The formulas of the longitudinal and transverse magnetization for each sublattice of the nanowire are given. The surface parameters have intense effects on the magnetizations and phase diagrams (phase transition temperatures and compensation temperatures) of the system. Two compensation points do exist for certain values of the surface transverse field, the surface single-ion anisotropy and the surface exchange coupling in the system. This interesting phenomenon may be potential applications in information storage technology.

Magnetization curves exhibit some typical thermal variations. A new type shows two compensation points, whose phenomenon has not been predicted in the bulk ferrimagnetic materials. Figure optionsDownload as PowerPoint slide