6533b820fe1ef96bd12791f5

RESEARCH PRODUCT

Slater-Pauling Rule and Curie-Temperature of Co$_2$-based Heusler compounds

G. H. FecherClaudia FelserHem C. KandpalSabine WurmehlGerd Schönhense

subject

Condensed Matter - Materials ScienceMaterials scienceSpin polarizationMagnetic momentCondensed matter physicsMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesGeneral Physics and AstronomyNew materialsengineering.materialHeusler compoundCondensed Matter::Materials ScienceFerromagnetismSimple (abstract algebra)engineeringCurie temperatureCondensed Matter::Strongly Correlated Electrons

description

A concept is presented serving to guide in the search for new materials with high spin polarization. It is shown that the magnetic moment of half-metallic ferromagnets can be calculated from the generalized Slater-Pauling rule. Further, it was found empirically that the Curie temperature of Co$_2$ based Heusler compounds can be estimated from a seemingly linear dependence on the magnetic moment. As a successful application of these simple rules, it was found that Co$_2$FeSi is, actually, the half-metallic ferromagnet exhibiting the highest magnetic moment and the highest Curie temperature measured for a Heusler compound.

yearjournalcountryeditionlanguage
2005-10-08
10.1063/1.2167629http://arxiv.org/abs/cond-mat/0510210