Calculation of the orbital magnetic moments in fcc 3d–4d binary clusters: Co–Rh and Co–Pd

The orbital magnetic moments ((L)) and spin moments ((S)) of mixed fcc CoNPdM and CoNRhM (N, M = 19, 24) clusters are determined by using a self-consistent real-space tight binding method. In all cases considered, (L) amounts to 20%-50% of the total magnetic moment Mz (Mz = 2(Sz) + (Lz)). Moreover,...

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Published inJournal of physics. Condensed matter Vol. 16; no. 22; pp. S2251 - S2256
Main Authors Muñoz-Navia, M, Dorantes-Dávila, J, Pastor, G M
Format Journal Article Conference Proceeding
LanguageEnglish
Published Bristol IOP Publishing 09.06.2004
Institute of Physics
Subjects
Exact sciences and technology
Physics
Self consistency
Local moments
Magnetic moments
Orbital calculations
Tight binding approximation
Angular momentum
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Summary:The orbital magnetic moments ((L)) and spin moments ((S)) of mixed fcc CoNPdM and CoNRhM (N, M = 19, 24) clusters are determined by using a self-consistent real-space tight binding method. In all cases considered, (L) amounts to 20%-50% of the total magnetic moment Mz (Mz = 2(Sz) + (Lz)). Moreover, the Mz are remarkably larger than the Mz (Co) values of the single Co cluster, due mainly to the local spin moments (Siz) induced at the Pd and Rh atoms, which amount to about 20% of Mz (2(Siz)Pd,Rh = 0.1-0.8 AB) and to a considerable enhancement of the orbital moments (LCo) at the Co atoms ((LCo) = 0.2-1 muB). These results are analysed from a local perspective.
Bibliography:ObjectType-Article-2
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content type line 23
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/16/22/026