Title

Comment On "Magnetization Of Two-Dimensional Square Arrays Of Nanomagnets"

Abstract

Recently, Takagaki and Ploog [Phys. Rev. B 71, 184439 (2005)] used a fourth-order Runge-Kutta technique to integrate the Landau-Lifschitz-Gilbert equations for square lattices of N×N magnetic nanodots with dipolar interdot interactions. Some of their results appeared to differ qualitatively from the second-order Runge-Kutta results obtained for the same systems by Kayali and Saslow [Phys. Rev. B 70, 174404 (2004)], both in the hysteresis area AN and in the number of steps of the magnetization hysteresis loops. We show that these differences are not due to inaccuracies in either calculation or to the potentially different magnetic induction sweep rates used, but can be attributed entirely to different choices of the dipolar interaction strength hdip a-3, where a is the two-dimensional lattice constant. © 2006 The American Physical Society.

Publication Date

12-29-2006

Publication Title

Physical Review B - Condensed Matter and Materials Physics

Volume

74

Issue

22

Number of Pages

-

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevB.74.226401

Socpus ID

33845725255 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33845725255

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