Magnetostatic field induced by mechanical deformations

力学的変形によって誘起される静磁場

山本 慧   ; 前川 禎通*

Yamamoto, Kei; Maekawa, Sadamichi*

We derive a general expression for the magnetostatic field generated by mechanical deformations to a ferromagnetic material in the continuum description. Linearization with respect to the displacement vector is shown to be well defined. To demonstrate the use of the formulation, we discuss two examples. Firstly, a complete derivation of the magneto-rotation coupling for a uniformly magnetized film is given. Secondly, the lowest asymmetric mode of Lamb waves propagating through a magnetic vortex is shown to induce in-plane magnetostatic field localized around the vortex core.