Ab initio description of domain walls in Permalloy: Energy of formation and resistivities

S. Gallego, P. Weinberger, L. Szunyogh, P. M. Levy, C. Sommers

Research output: Article

12 Citations (Scopus)

Abstract

To determine the formation energy and resistivity for domain walls in permalloy (fcc-Ni85Fe15) we use the fully relativistic spin-polarized screened Korringa-Kohn-Rostoker method for layered systems and the corresponding Kubo-Greenwood equation in the context of the (inhomogeneous) coherent potential approximation. We find that the difference in formation energy between 90° and 180° domains becomes very small if the domain wall width increases. Furthermore, we show that regardless of the configuration within a domain wall the in-plane components of the resistivity are larger than in a single domain and, in particular, that the anisotropic magnetoresistance ratio within the domain wall vanishes.

Original languageEnglish
Article number054406
Pages (from-to)544061-544068
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume68
Issue number5
Publication statusPublished - aug. 2003

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ASJC Scopus subject areas

  • Condensed Matter Physics

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