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Field-induced partial order in the spin ice dysprosium titanate

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Abstract.

Neutron scattering has been used to investigate the magnetic correlations in the spin-ice material dysprosium titanate, Dy2Ti2O7. An isotopically enriched sample was used to minimise neutron absorption. In zero field no magnetic order was observed down to 50 mK but the magnetic diffuse scattering was in qualitative agreement with that expected for the disordered low-temperature state of dipolar spin ice. Application of a field of ≈0.8 T in the [100] direction led to long-range order. With the field applied in the [1\(\bar\Box1\Box\)0] direction a coexistence of long-range ferromagnetic and short-range antiferromagnetic order was observed. This is attributed to the pinning of only half the spins by the field. The hysteresis loops in both field orientations displayed unusual steps and plateaus.

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Authors and Affiliations

  1. Davy-Faraday Research Laboratory, Royal Institution of Great Britain, 21 Albemarle Street, London W1S 4BS, UK, , , , , , GB

    T. Fennell

  2. ISIS Facility, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK, , , , , , GB

    O.A. Petrenko, B. Fåk & M.J. Harris

  3. Department Of Physics, University of Warwick, Coventry, CV4 7AL, UK, , , , , , GB

    G. Balakrishnan & D.McK. Paul

  4. Department of Chemistry, University College, 20 Gordon Street, London, W1C 0HJ, UK, , , , , , GB

    S.T. Bramwell & J.D.M. Champion

Authors
  1. T. Fennell
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  2. O.A. Petrenko
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  3. G. Balakrishnan
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  4. S.T. Bramwell
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  5. J.D.M. Champion
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  6. B. Fåk
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  7. M.J. Harris
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  8. D.McK. Paul
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Additional information

Received: 16 July 2001 / Accepted: 11 December 2001

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ID="*"Corresponding author. (Fax: +44-207/629-3569, E-mail: tom@ri.ac.uk)

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ID="**"Present address: Department of Physics, University of Warwick, Coventry, CV4 7AL

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Fennell, T., Petrenko, O., Balakrishnan, G. et al. Field-induced partial order in the spin ice dysprosium titanate . Appl Phys A 74 (Suppl 1), s889–s891 (2002). https://doi.org/10.1007/s003390201638

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  • DOI: https://doi.org/10.1007/s003390201638

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