Adaptation and performance of the Cartesian coordinates fast multipole method for nanomagnetic simulations

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Adaptation and Performance of the Cartesian Coordinates Fast Multipole Method for Nanomagnetic Simulations

An implementation of the fast multiple method (FMM) is performed for magnetic systems with long-ranged dipolar interactions. Expansion in spherical harmonics of the original FMM is replaced by expansion of polynomials in cartesian coordinates, which is considerably simpler. Under open boundary conditions, an expression for multipole moments of point dipoles in a cell is derived. These make the ...

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ژورنال

عنوان ژورنال: Journal of Magnetism and Magnetic Materials

سال: 2009

ISSN: 0304-8853

DOI: 10.1016/j.jmmm.2009.07.016