File Download

There are no files associated with this item.

  • Find it @ UNIST can give you direct access to the published full text of this article. (UNISTARs only)
Related Researcher

손창희

Sohn, Chang Hee
Laboratory for Unobtainable Functional Oxides
Read More

Views & Downloads

Detailed Information

Cited time in webofscience Cited time in scopus
Metadata Downloads

Stabilization of ferromagnetic ordering in cobaltite double perovskites of La2CoIrO6 and La2CoPtO6

Author(s)
Lee, Min-CheolSohn, C. H.Kim, S. Y.Lee, K. D.Won, C. J.Hur, N.Kim, J-YCho, Deok-YongNoh, T. W.
Issued Date
2015-08
DOI
10.1088/0953-8984/27/33/336002
URI
https://scholarworks.unist.ac.kr/handle/201301/26313
Fulltext
https://iopscience.iop.org/article/10.1088/0953-8984/27/33/336002/meta
Citation
JOURNAL OF PHYSICS-CONDENSED MATTER, v.27, no.33, pp.336002
Abstract
We investigated the local electronic structure and magnetic properties of the cobaltite double perovskites La2CoIrO6 and La2CoPtO6 using Co L-2,L-3-edge x-ray absorption spectroscopy and x-ray magnetic circular dichroism. Despite similarity in the local electronic structure (Co2+ high-spin states) as well as in the crystal structure (P2(1)/n), only La2CoIrO6 exhibits substantial orbital and spin magnetic moments of Co2+, whereas they are much weaker in the case of La2CoPtO6. This composition dependence is consistent with the results of magnetization measurements. The details of the mechanism of ferromagnetic ordering in the Co2+ sublattice in La2CoIrO6 and the lack thereof in La2CoPtO6 are explained in terms of the orbital hybridization of the Co minority-spin t(2g) state and the Ir/Pt j(eff) = 1/2 state.
Publisher
IOP PUBLISHING LTD
ISSN
0953-8984
Keyword (Author)
double perovskiteferromagnetismx-ray magnetic circular dichroism
Keyword
RAY CIRCULAR-DICHROISMTEMPERATURE

qrcode

Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.