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Variation of the effective exchange parameter across 3d-transition metal series
Uppsala University.
Linköpings universitet, Institutionen för fysik, kemi och biologi, Teoretisk Fysik. Linköpings universitet, Tekniska högskolan.
2005 (engelsk)Inngår i: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 97, nr 10Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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.

sted, utgiver, år, opplag, sider
2005. Vol. 97, nr 10
HSV kategori
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URN: urn:nbn:se:liu:diva-24461DOI: 10.1063/1.1855204Lokal ID: 6573OAI: oai:DiVA.org:liu-24461DiVA, id: diva2:244780
Tilgjengelig fra: 2009-10-07 Laget: 2009-10-07 Sist oppdatert: 2017-12-13

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