Magnetic order of the hexagonal rare-earth manganite Dy(0.5)Y(0.5)MnO(3)

Helton, J.S.; Elizabeth, S.; Singh, D.K.; Nair, H.S.

doi:10.1103/PhysRevB.84.064434

Journal Article

PreJuSER-20188

Magnetic order of the hexagonal rare-earth manganite Dy(0.5)Y(0.5)MnO(3)

Helton, J. S. ; Singh, D. K. ; Nair, H. S.FZJ* ; Elizabeth, S.

2011
APS College Park, Md.

Physical review / B 84(6), 064434 (2011) [10.1103/PhysRevB.84.064434]

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Please use a persistent id in citations: http://hdl.handle.net/2128/10869 doi:10.1103/PhysRevB.84.064434

Abstract: Hexagonal Dy0.5Y0.5MnO3, a multiferroic rare-earth manganite with geometrically frustrated antiferromagnetism, has been investigated with single-crystal neutron diffraction measurements. Below 3.4 K magnetic order is observed on both the Mn (antiferromagnetic) and Dy (ferrimagnetic) sublattices that is identical to that of undiluted hexagonal DyMnO3 at low temperature. The Mn moments undergo a spin reorientation transition between 3.4 K and 10 K, with antiferromagnetic order of the Mn sublattice persisting up to 70 K; the antiferromagnetic order in this phase is distinct from that observed in undiluted (h) DyMnO3, yielding a qualitatively new phase diagram not seen in other hexagonal rare-earth manganites. A magnetic field applied parallel to the crystallographic c axis will drive a transition from the antiferromagnetic phase into the low-temperature ferrimagnetic phase with little hysteresis.

Keyword(s): Basic research (1st) ; Others (1st) ; Magnetism (2nd) ; J

Classification:

Physics, Condensed Matter

Note: We thank J. W. Lynn for guidance and helpful discussions. J. S. H. acknowledges support from the NRC/NIST Postdoctoral Associateship Program. This work was supported in part by the National Science Foundation under Agreement No. DMR-0944772.

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