Variation of the effective exchange parameter across 3d-transition-metal series
2005 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 97, no 10, 10A317- p.Article in journal, Meeting abstract (Refereed) Published
The so-called effective exchange parameter J0 of the classical Heisenberg Hamiltonian for magnetic interactions is investigated as a function of volume and occupation of the valence band across 3d-transition-metal series in face-centered-cubic (fcc) metals, from Mn to Ni. We show that there exists a particular area in the volume-electron concentration phase space, where the effective exchange parameter behaves anomalously. The peculiarity, in combination with deviations of the electronic structure in real alloys from the rigid-band behavior, should lead to highly frustrated magnetic configurations that were predicted theoretically for the fcc Invar alloys.
Place, publisher, year, edition, pages
2005. Vol. 97, no 10, 10A317- p.
IdentifiersURN: urn:nbn:se:uu:diva-93152DOI: 10.1063/1.1855204OAI: oai:DiVA.org:uu-93152DiVA: diva2:166540
THE 49TH ANNUAL CONFERENCE ON MAGNETISM AND MAGNETIC MATERIALS / Electronic Structure and Itinerant Magnetism, November, 2004, Jacksonville, Florida