Magnetic properties of a hexagonal transverse Ising nanoisland

Abstract

The magnetic properties of a hexagonal transverse Ising nanoisland have been calculated by the effective-field theory with correlations. The effects of surface coupling, interlayer coupling, and the competition between transverse fields at the surface shell and in the inner core on phase diagrams and magnetizations are examined. Meanwhile, the results are also compared with two different nanoislands which consist of two layers with nine atoms or five atoms in each of the layers.

Keywords:

• nanoislands
• phase diagrams
• magnetizations
• transverse Ising model

PACS:

• 75.60.Ej
• 78.67.Ch
• 78.67.Uh
• 77.80.B-

Disclosure statement

No potential conflict of interest was reported by the author.

Additional information

Funding

This project was supported by the Natural Science Foundation of Shandong Province, China [grant no. ZR2013AL008] and the Doctor Research Startup Foundation of Linyi University, China [grant no. LYDX2013BS005].