Transverse Ising nano-systems: Unconventinal surface effects

•Phase diagrams and magnetizations are examined for some nanosystems.•The effects of surface parameters on them are examined by the EFT.•Some novel and universal features are obtained for these systems.•The possibility of re-entrant phenomena is proposed.

The phase diagrams and temperature dependences of magnetizations in core–shell transverse Ising nanosystems, namely nanowire, nanotube and nanoparticles, are studied by the use of the effective-field theory with correlations (EFT). Some novel and universal features, such as the possibility of re-entrant phenomena being free from disorder induced frustration, are obtained for the magnetic properties in such systems.