Agrestini, S., Mazzoli, C., Bombardi, A. and Lees, Martin R. (2008) Incommensurate magnetic ground state revealed by resonant x-ray scattering in the frustrated spin system Ca3Co2O6. Physical Review B (Condensed Matter and Materials Physics), Vol.77 (No.14). Article no. 140403. doi:10.1103/PhysRevB.77.140403

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Abstract

We have performed a resonant x-ray scattering study at the Co pre-K edge on a single crystal of Ca3Co2O6. The measurements reveal an abrupt transition to a magnetically ordered state immediately below T-N=25 K, with a magnetic correlation length in excess of 5500 A along the c axis chains. There is no evidence for modifications to the Co3+ spin state. A temperature dependent modulation in the magnetic order along the c axis and an unusual decrease in the magnetic correlation lengths on cooling are observed. The results are compatible with the onset of a partially disordered antiferromagnetic structure in Ca3Co2O6.

Item Type:	Journal Article
Subjects:	Q Science > QC Physics Q Science > QD Chemistry
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Cobalt compounds, X-rays -- Scattering, Magnetism, Nuclear spin
Journal or Publication Title:	Physical Review B (Condensed Matter and Materials Physics)
Publisher:	American Physical Society
ISSN:	1098-0121
Official Date:	April 2008
Dates:	Date Event April 2008 Published
Volume:	Vol.77
Number:	No.14
Number of Pages:	4
Page Range:	Article no. 140403
DOI:	10.1103/PhysRevB.77.140403
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Engineering and Physical Sciences Research Council (EPSRC)
Grant number:	EP/C000757/1 (EPSRC)

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