The X-ray magnetic dichroism, the sum rule and spin fluctuations on the surface of manganite (LaPrCa) MnO3

DC ElementWertSprache
dc.contributor.authorGrebennikov, Vladimir I.
dc.contributor.authorBebenin, Nikolai G.
dc.contributor.authorZainullina, Rimma I.
dc.contributor.authorKuepper, Karsten
dc.contributor.authorKuznetsova, Tatyana V.
dc.date.accessioned2021-12-23T16:14:30Z-
dc.date.available2021-12-23T16:14:30Z-
dc.date.issued2017
dc.identifier.issn03048853
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/11109-
dc.descriptionEURO-Asian Symposium on Trends in Magnetism (EASTMAG), Siberian Fed Univ, Krasnoyarsk, RUSSIA, AUG 15-19, 2016
dc.description.abstractThe problem of determining the magnitude of the atomic magnetic moments in compounds with rare-earth and transition elements using the X-ray magnetic circular dichroism (XMCD) is investigated. The standard sum rules approach usually gives the moment values by several times smaller than their bulk values obtained from the direct magnetic measurements. We attribute this to the strong spin fluctuations in the surface layer which actually formed the soft XMCD signal. A method of determining the value of the local magnetic moments in the presence of strong fluctuations is proposed. The magnetic interactions in La0.5Pr0.2Ca0.3MnO3 are investigated by x-ray absorption spectroscopy, XMCD and bulk magnetization measurements. The proposed procedure is used to determine the values of atomic magnetic moments of transition and rare-earth elements as well as net magnetization on the surface and in the bulk from experimental Mn L-2,L-3 and Pr M-4,M-5 XMCD spectra.
dc.description.sponsorshipRFBRRussian Foundation for Basic Research (RFBR) [14-02-00080]; UB RAS [15-8-2-10]; Act 211 Government of the Russian Federation [02.A03.21.0006]; Center of Excellence ``Radiation and Nuclear Technologies''; The research was carried out within the state assignment of FASO of Russia (Theme ``Quant'' No. 01201463332), supported in part by RFBR (Project No. 14-02-00080), UB RAS (Project No. 15-8-2-10), Act 211 Government of the Russian Federation (Contract No. 02.A03.21.0006), Center of Excellence ``Radiation and Nuclear Technologies''.
dc.language.isoen
dc.publisherELSEVIER SCIENCE BV
dc.relation.ispartofJOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
dc.subjectCIRCULAR-DICHROISM
dc.subjectIRON
dc.subjectManganites La0.5Pr0.2Ca0.3MnO3
dc.subjectMaterials Science
dc.subjectMaterials Science, Multidisciplinary
dc.subjectNEXAFS
dc.subjectPhysics
dc.subjectPhysics, Condensed Matter
dc.subjectSINGLE-CRYSTALS
dc.subjectSurface and bulk magnetic moments
dc.subjectXMCD sum rules
dc.titleThe X-ray magnetic dichroism, the sum rule and spin fluctuations on the surface of manganite (LaPrCa) MnO3
dc.typeconference paper
dc.identifier.doi10.1016/j.jmmm.2016.12.060
dc.identifier.isiISI:000406865200023
dc.description.volume440
dc.description.startpage79
dc.description.endpage82
dc.contributor.orcid0000-0003-4302-9607
dc.contributor.orcid0000-0003-2035-6103
dc.contributor.orcid0000-0003-1099-307X
dc.contributor.orcid0000-0002-0353-4775
dc.contributor.researcheridJ-4806-2013
dc.contributor.researcheridK-6955-2013
dc.contributor.researcheridJ-4234-2013
dc.contributor.researcheridJ-4287-2013
dc.identifier.eissn18734766
dc.publisher.placePO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
dcterms.isPartOf.abbreviationJ. Magn. Magn. Mater.
crisitem.author.deptFB 04 - Physik-
crisitem.author.deptidfb04-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.netidKuKa120-
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