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Variation of the effective exchange parameter across 3d-transition-metal series
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Theoretical Physics .
2005 (English)In: Journal of Applied Physics, ISSN 0021-8979, Vol. 97, no 10Article in journal (Refereed) Published
Abstract [en]

The so-called effective exchange parameter J(0) 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. (c) 2005 American Institute of Physics.

Place, publisher, year, edition, pages
2005. Vol. 97, no 10
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-46098DOI: 10.1063/1.1855204OAI: diva2:266994
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-12

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Abrikosov, Igor
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The Institute of TechnologyTheoretical Physics
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