Magnetostatic energy calculations in two- and three-dimensional arrays of ferromagnetic prisms

Exact analytic expressions for magnetostatic energy calculations in arrays of ferromagnetic prisms are presented. They apply to two-dimensional (2-D) and three-dimensional (3-D) arrays of variable length prisms with uniform magnetization inside each prism. This permits the study of irregular magnetic structures allowing also a variable grid where the size of the cells depends on the structure itself. These expressions cover all possible cases for 2-D and 3-D problems.