Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2010-04-07
Physics
Condensed Matter
Statistical Mechanics
5 pages, 4 figures, PHYSICAL REVIEW B 81, 140406(R) (2010)
Scientific paper
10.1103/PhysRevB.81.140406
Azurite, Cu3(CO3)2(OH)2, has been considered an ideal example of a one-dimensional (1D) diamond chain antiferromagnet. Early studies of this material imply the presence of an ordered antiferromagnetic phase below $T_N \sim 1.9$ K while magnetization measurements have revealed a 1/3 magnetization plateau. Until now, no corroborating neutron scattering results have been published to confirm the ordered magnetic moment structure. We present recent neutron diffraction results which reveal the presence of commensurate magnetic order in azurite which coexists with significant magnetoelastic strain. The latter of these effects may indicate the presence of spin frustration in zero applied magnetic field. Muon spin rotation, $\mu$SR, reveals an onset of short-range order below 3K and confirms long-range order below $T_N$.
Brühl Andreas
Gerischer S.
Gibson M. C. R.
Hoffmann J.-U.
Kraken M.
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