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

Helton, Joel S. and Singh, Deepak K. and Nair, Harikrishnan S. and Elizabeth, Suja (2011) Magnetic order of the hexagonal rare-earth manganite Dy(0.5)Y(0.5)MnO(3). In: Physical Review B: Condensed Matter and Materials Physics, 84 (6).

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Official URL: http://prb.aps.org/abstract/PRB/v84/i6/e064434

Abstract

Hexagonal Dy(0.5)Y(0.5)MnO(3), 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 DyMnO(3) 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) DyMnO(3), 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.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to The American Physical Society.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 16 Sep 2011 07:07
Last Modified: 16 Sep 2011 07:07
URI: http://eprints.iisc.ernet.in/id/eprint/40444

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