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The x-ray magnetic circular dichroism spin sum rule for 3d(4) systems: Mn(3+) ions in colossal magnetoresistance manganites.
MedLine Citation:
PMID:  23034342     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The colossal magnetoresistance manganites La(0.87±0.02)Sr(0.12±0.02)MnO(3+δ), La(0.78±0.02)Sr(0.17±0.02)MnO(3+δ), and La(0.66±0.02)Sr(0.36±0.02)MnO(3+δ) (δ close to 0) were investigated by using soft x-ray magnetic circular dichroism (XMCD) and magnetometry. Very good agreement between the values for the average Mn magnetic moments determined with these two methods was achieved by correcting the XMCD spin sum rule results by means of charge transfer multiplet calculations, which also suggest a charge transfer of ∼50% for Mn(4+) and ≃30% for Mn(3+). The magnetic moment was found to be localized at the Mn ions for x = 0.17 and 0.36 at 80 K and for x = 0.12 in the temperature range from 80 to 300 K. We discuss our findings in the light of previously published data, confirming the validity of our approach.
Authors:
K Kuepper; M Raekers; C Taubitz; M Uhlarz; C Piamonteze; F M F de Groot; E Arenholz; V R Galakhov; Ya M Mukovskii; M Neumann
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-04
Journal Detail:
Title:  Journal of physics. Condensed matter : an Institute of Physics journal     Volume:  24     ISSN:  1361-648X     ISO Abbreviation:  J Phys Condens Matter     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-4     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101165248     Medline TA:  J Phys Condens Matter     Country:  -    
Other Details:
Languages:  ENG     Pagination:  435602     Citation Subset:  -    
Affiliation:
Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, PO Box 51 01 19, D-01314 Dresden, Germany.
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