[Back]

S. Gallego, P. Weinberger, L. Szunyogh, P.M. Levy, C. Sommers:
"Ab initio description of domain walls in Permalloy: Energy of formation and resistivities";
Physical Review B, 68 (2003), 0544061 - 0544068.

To determine the formation energy and resistivity for domain walls in pemialloy
(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.

http://aleph.ub.tuwien.ac.at/F?base=tuw01&func=find-c&ccl_term=AC04405757

http://www.cms.tuwien.ac.at/publications/pdf2003/prb68-054406-03.pdf