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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
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: |
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| 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) |
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