The nature of the magnetic order in Ca3Co2O6

Details The nature of the magnetic order in Ca3Co2O6 The nature of the magnetic order in Ca3Co2O6

2008-07-28

arxiv.org/abs/0807.4489v1

Phys. Rev. Lett. 101, 097207 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, submitted to Physical Review Letters

Scientific paper

10.1103/PhysRevLett.101.097207

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 co-exists with a shorter range order with a correlation length scale of 180 A in the ab plane. Remarkably, on cooling, the volume of material exhibiting short range order increases at the expense of the long-range order.

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