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arXiv · 1106.3966

Magnetic Order of the Hexagonal Rare Earth Manganite Dy(0.5)Y(0.5)MnO3

Joel S. Helton·Deepak K. Singh·Harikrishnan S. Nair·Suja Elizabeth
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Abstract

Hexagonal Dy(0.5)Y(0.5)MnO3, 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.

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Joel S. Helton, Deepak K. Singh, Harikrishnan S. Nair, Suja Elizabeth. 2011-08-24. Magnetic Order of the Hexagonal Rare Earth Manganite Dy(0.5)Y(0.5)MnO3. https://doi.org/10.1103/physrevb.84.064434

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