Magnetic and interface properties of Fe0.82Ni0.18/Co(001) superlattices
2011 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 23, no 5, 055301- p.Article in journal (Refereed) Published
The thickness dependence of the Fe magnetic hyperfine field and the interfacial intermixing of Fe0.82Ni0.18/Co superlattices, with the same thickness for FeNi and Co layers, have been investigated. A local concentration model using the magnetic hyperfine field values from the [Fe0.82Ni0.18](1-x)Co-x alloys has been used to interpret the field distribution in the superlattices and the Co concentration profiles over the superlattices. A relationship between the Fe magnetic hyperfine field and the Fe magnetic moment has been determined for the unordered [Fe0.82Ni0.18](1-x)Co-x and Fe1-xCox alloys. The magnetic hyperfine fields have been explained using two Fermi contact terms: (i) the core electron term proportional to the Fe magnetic moment with a proportionality constant of -13 T/mu B and (ii) a valence electron term linearly dependent on the Co concentration. The direction of the magnetic moments is found to be in the sample plane except for the 1/1 superlattice, where an angle of about 45 degrees is found.
Place, publisher, year, edition, pages
2011. Vol. 23, no 5, 055301- p.
Physical Sciences Inorganic Chemistry
Research subject Chemistry with specialization in Inorganic Chemistry
IdentifiersURN: urn:nbn:se:uu:diva-93793DOI: 10.1088/0953-8984/23/5/055301ISI: 000286380800006OAI: oai:DiVA.org:uu-93793DiVA: diva2:167384