Research Papers in Physics and Astronomy


Date of this Version



Published in Applied Physics Letters 77, 2740-2742 (2000). Copyright © 2000 The American Physical Society. Used by permission.


A theory of magnetostatic coupling in thin-film uniformly magnetized arrays of rectangular magnetic elements is presented. Analytic expressions for the magnetostatic energy and the dipolar fields are derived. The influence of the aspect ratio and the spacing between the elements on the magnetostatic coupling is investigated. It is found that increasing the aspect ratio reduces the critical distance between the elements, above which the magnetostatic inter-element coupling can be neglected.