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Mg 2p shallow core-level and local atomic structure of i-ZnMgRE quasicrystals
KTH, Skolan för informations- och kommunikationsteknik (ICT), Materialfysik, Materialfysik, MF.
KTH, Skolan för informations- och kommunikationsteknik (ICT), Materialfysik, Materialfysik, MF.ORCID-id: 0000-0001-7409-575X
Vise andre og tillknytning
2006 (engelsk)Inngår i: Applied Surface Science, ISSN 0169-4332, E-ISSN 1873-5584, Vol. 252, nr 15, s. 5411-5414Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We present a detailed analysis of the Mg 2p shallow core-levels measured on icosahedral single-grain ZnMgY, ZnMgHo, and ZnMgEr quasicrystals during a photoelectron microscopy study. The synchrotron radiation photoemission measurements were performed on in situ cleaved samples at a pressure of 10(-10) mbar and at low temperature, typically 90-150 K. The Mg 2p photoemission lines are essentially broadened as compared to those of the Mg 2p spin-orbit doublet recorded on the Zn2Mg crystalline Laves phase. The broadening is associated to the coordination shifts of the Mg 2p level due to the inequivalent magnesium sites in the quasicrystalline lattice. The coordination shifts are calculated on the basis of i-ZnMg(Ho, Y) atomic structure data, recently determined from the pair distribution function analysis. The coordination shifts obtained are up to 0.2 eV. The Mg 2p experimental spectral intensity is nicely reproduced by a superposition of coordination-shifted Mg 2p spin-orbit doublets.

sted, utgiver, år, opplag, sider
2006. Vol. 252, nr 15, s. 5411-5414
Emneord [en]
quasicrystals, photoemission spectroscopy, coordination shift, metals
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-15788DOI: 10.1016/j.apsusc.2005.12.059ISI: 000238623300042Scopus ID: 2-s2.0-33744536800OAI: oai:DiVA.org:kth-15788DiVA, id: diva2:333830
Merknad
QC 20100525 QC 20111004. Conference: 8th International Conference on Atomically Controlled Surfaces, Interfaces, and Nanostructures/13th International Congress on Thin Films. Stockholm, SWEDEN. JUN 20-23, 2005 Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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Karlsson, Ulf O.

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