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Field-driven transitions in the dipolar pyrochlore antiferromagnet Gd2Ti2O7

Cepas, Olivier and Shastry, Sriram B (2004) Field-driven transitions in the dipolar pyrochlore antiferromagnet Gd2Ti2O7. In: Physical Review B (Condensed Matter and Materials Physics -1(II)), 69 (18). pp. 184402-1.


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We present a mean-field theory for magnetic-field-driven transitions in dipolar coupled gadolinium titanate Gd2Ti2O7 pyrochlore system. Low-temperature neutron scattering yields a phase that can be regarded as a eight sublattice antiferromagnet, in which long-ranged ordered moments and fluctuating moments coexist. Our theory gives parameter regions where such a phase is realized, and predicts several other phases, with transitions amongst them driven by magnetic field as well as temperature. We find several instances of local disorder parameters describing the transitions.

Item Type: Journal Article
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Additional Information: Copyright for this article belongs to American Physical Society (APS).
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 13 Dec 2004
Last Modified: 19 Sep 2010 04:13
URI: http://eprints.iisc.ernet.in/id/eprint/448

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