Publication
Title
Oxygen-driven competition between low-dimensional structures of and with M = Ru,Ir
Author
Abstract
We have realized a reversible structure transformation of one-dimensional 1D K4CdCl6-type Sr3CoMO6 with the Co2+/M4+ cation ordering into the two-dimensional 2D double layered Ruddlesden-Popper structure Sr3CoMO7-delta with a random distribution of Co and M (with M = Ru, Ir) upon increasing the partial oxygen pressure. The combined soft and hard X-ray absorption spectroscopy studies show that under transformation, Co and M cations were oxidized to Co3+ and M5+. During oxidation, high-spin Co2+ in Sr3CoMO6 first transforms into high-spin Co3+ in oxygen-deficient Sr3CoMO7-delta, and then further transforms into low-spin Co3+ in fully oxidized Sr3CoMO7 upon further increasing the partial pressure of oxygen. The 1D Sr3CoMO6 compound is magnetically ordered at low temperatures with the magnetic moments lying along the c-axis. Their alignment is parallel for Sr3CoRuO6 and antiparallel for Sr3CoIrO6. The 2D compounds reveal a spin-glass-like behavior related to the random distribution of magnetic cations in the structure.
Language
English
Source (journal)
Dalton Transactions : an international journal of inorganic chemistry / Royal Society of Chemistry [London] - Cambridge, 2003, currens
Journal of the Chemical Society : Dalton transactions. - London, 1972 - 1999
Publication
Cambridge : Royal Society of Chemistry , 2014
ISSN
1477-9226 [print]
1477-9234 [online]
DOI
10.1039/C4DT01893A
Volume/pages
43 :37 (2014) , p. 13883-13891
ISI
000342074100009
Pubmed ID
25111502
Full text (Publisher's DOI)
UAntwerpen
Faculty/Department
Research group
Project info
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 06.11.2014
Last edited 09.10.2023
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