Magnetic Characterisation of Ni Triangular Elements Prepared by Nanosphere Lithography

A systematic study of the magnetic properties of submicron equilateral Ni triangles is reported. The triangular shape is a result of the particular preparation method used, which is based on a new kind of nanosphere lithography technique. In this case, the magnetic material is deposited through a latex sphere mask, yielding a periodic hexagonal array of in-plane magnetised triangular shaped elements. The magnetic properties were investigated as a function of thickness by magnetic force microscopy, superconducting quantum interference device magnetometry and vibrating sample magnetometry.