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On the Magnetic Anisotropy of Gd Metal
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2003 (English)In: Physical review letters, ISSN 0031-9007, Vol. 91, no 15, 157201-1 p.Article in journal (Refereed) Published
Abstract [en]

Using first-principles theory, we have calculated the energy of Gd as a function of spin direction, , between the c and a axes and found good agreement with experiment for both the total magnetic anisotropy energy and its angular dependence. The calculated low temperature direction of the magnetic moment lies at an angle of 20 to the c axis. The calculated magnetic anisotropy energy of Gd metal is due to a unique mechanism involving a contribution of 7:5 eV from the classical dipoledipole interaction between spins plus a contribution of 16 eV due to the spin-orbit interaction of the conduction electrons. The 4f spin polarizes the conduction electrons via exchange interaction, which transfers the magnetic anisotropy of the conduction electrons to the 4f spin.

Place, publisher, year, edition, pages
2003. Vol. 91, no 15, 157201-1 p.
Keyword [en]
rare-earth, DFT
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:miun:diva-1824DOI: 10.1103/PhysRevLett.91.157201Local ID: 583OAI: oai:DiVA.org:miun-1824DiVA: diva2:26856
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2011-01-10Bibliographically approved

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Edvardsson, Sverker
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