Field-induced incommensurate spin structure of TbNiAl 4

W. D. Hutchison*, D. J. Goossens, R. E. Whitfield, A. J. Studer, K. Nishimura, T. Mizushima

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    5 Citations (Scopus)


    TbNiAl 4 exhibits incommensurate and commensurate magnetic ordering as a function of temperature. As a function of applied field it undergoes a series of magnetic phase transitions. The first of these transitions, into an intermediate spin arrangement, is the source of a large inverse magnetocaloric effect, an unusual result given that an aligning field is being applied. This has potential uses in magnetic cooling. Here, single-crystal neutron diffraction with applied magnetic field is used to obtain the intermediate field spin arrangement in TbNiAl 4. We find that not only does the applied field drive the system from commensurate to incommensurate ordering, but that the phase transition shows hysteresis such that a mixed state simultaneously showing commensurate and incommensurate antiferromagnetic ordering, along with ferromagnetism, can be obtained.

    Original languageEnglish
    Article number014412
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Issue number1
    Publication statusPublished - 13 Jul 2012


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