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Spin-state transitions in PrCoO(3) studied with neutron powder diffraction

TitleSpin-state transitions in PrCoO(3) studied with neutron powder diffraction
Publication TypeJournal Article
Year of Publication2011
AuthorsRen Y, Yan JQ, Zhou JS, Goodenough JB, Jorgensen JD, Short S, Kim H, Proffen T, Chang S, McQueeney RJ
Journal TitlePhysical Review B
Volume84
Pages214409
Date Published12
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000297761700006
KeywordsDISTORTIONS, lacoo3, scattering
Abstract

The crystal structure of PrCoO(3) has been studied with high-resolution neutron powder diffraction and pair-distribution-function analysis in the temperature range from 12-600 K. The compound has the orthorhombic (Pbnm) perovskite structure over the entire temperature range. The temperature dependence of the average Co-O bond length shows clear anomalies near 60 K and 200 K where anomalous temperature dependencies of thermal conductivity and magnetic susceptibility have been reported. The data show a constant intermediate-spin-state fraction within 60 < T < 200 K and excitation of high-spin-state Co(III) above 200 K.
URLhttp://prb.aps.org/abstract/PRB/v84/i21/e214409
DOI10.1103/PhysRevB.84.214409
Alternate JournalPhys. Rev. B