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Nature of the magnetic order in Ca3Co2O6

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Agrestini, S., Chapon, L. C., Daoud-Aladine, A., Schefer, J., Gukasov, A., Mazzoli, C., Lees, Martin R. and Petrenko, Oleg (2008) Nature of the magnetic order in Ca3Co2O6. Physical Review Letters, Vol.101 (No.9). Article no. 097207 . doi:10.1103/PhysRevLett.101.097207 ISSN 0031-9007.

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.101.097207

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Abstract

We present a detailed powder and single-crystal neutron diffraction study of the spin chain compound Ca3Co2O6. Below 25 K, the system orders magnetically with a modulated partially disordered antiferromagnetic structure. We give a description of the magnetic interactions in the system which is consistent with this magnetic structure. Our study also reveals that the long-range magnetic order coexists with a shorter-range order with a correlation length scale of similar to 180 angstrom in the ab plane. Remarkably, on cooling, the volume of material exhibiting short-range order increases at the expense of the long-range order.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Library of Congress Subject Headings (LCSH): Neutrons -- Diffraction, Calcium compounds -- Magnetic properties, Magnetization, Ferrimagnetism
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 29 August 2008
Dates:
DateEvent
29 August 2008Published
Volume: Vol.101
Number: No.9
Number of Pages: 4
Page Range: Article no. 097207
DOI: 10.1103/PhysRevLett.101.097207
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Engineering and Physical Sciences Research Council (EPSRC), Sixth Framework Programme (European Commission) (FP6)
Grant number: EP/CO00757/1 (EPSRC), RII3-CT-2004-506008 (FP6), RII3-CT-2003-505925 (FP6)

Data sourced from Thomson Reuters' Web of Knowledge

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