Magnetization and domain structure of bcc Fe81Ni19/Co (001) superlattices
2004 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 69, no 6, 064411/1-064411/11 p.Article in journal (Refereed) Published
Dense stripe domains were obsd. for a Fe81Ni19/Co superlattice grown on a MgO(100) single crystal substrate using dc magnetron sputtering. The stripe domain period exhibits irreversible changes with the magnetic field, as detd. by magnetic force microscopy. We present a simple theor. model for this system and calc. the magnetization and domain period as functions of the applied field by minimizing the total energy. For this purpose, an expression for the domain wall energy and wall width for arbitrary angles and one for the magnetostatic energy are derived. The model correctly predicts a decreasing domain period with the increasing applied field. At larger magnetic fields a transition to "chaotic" two-dimensional stripe patterns is obsd. and a qual. discussion of this phenomenon is given.
Place, publisher, year, edition, pages
2004. Vol. 69, no 6, 064411/1-064411/11 p.
iron nickel cobalt superlattice magnetization magnetic domain structure
IdentifiersURN: urn:nbn:se:kth:diva-78475DOI: 10.1103/PhysRevB.69.064411ISI: 000220092100039OAI: oai:DiVA.org:kth-78475DiVA: diva2:492531
CAPLUS AN 2004:210899(Journal). QC 201203072012-02-082012-02-082012-03-07Bibliographically approved