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Cerium; Crystal Structure and Position in The Periodic Table
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics. Uppsala University, Sweden.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Material Physics. Uppsala University.
2014 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 4, 6398- p.Article in journal (Refereed) Published
Abstract [en]

The properties of the cerium metal have intrigued physicists and chemists for many decades. In particular a lot of attention has been directed towards its high pressure behavior, where an isostructural volume collapse (gamma phase -> alpha phase) has been observed. Two main models of the electronic aspect of this transformation have been proposed; one where the 4f electron undergoes a change from being localized into an itinerant metallic state, and one where the focus is on the interaction between the 4f electron and the conduction electrons, often referred to as the Kondo volume collapse model. However, over the years it has been repeatedly questioned whether the cerium collapse really is isostructural. Most recently, detailed experiments have been able to remove this worrisome uncertainty. Therefore the isostructural aspect of the a-c transition has now to be seriously addressed in the theoretical modeling, something which has been very much neglected. A study of this fundamental characteristic of the cerium volume collapse is made in present paper and we show that the localized reversible arrow delocalized 4f electron picture provides an adequate description of this unique behavior. This agreement makes it possible to suggest that an appropriate crossroad position for cerium in The Periodic Table.

Place, publisher, year, edition, pages
2014. Vol. 4, 6398- p.
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-153846DOI: 10.1038/srep06398ISI: 000341939500001Scopus ID: 2-s2.0-84922507691OAI: oai:DiVA.org:kth-153846DiVA: diva2:754962
Funder
EU, European Research Council, 228074Swedish Research CouncilCarl Tryggers foundation
Note

QC 20141013

Available from: 2014-10-13 Created: 2014-10-09 Last updated: 2017-12-05Bibliographically approved

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