Moving domain boundary and the spontaneous flow of thermal current controlled by magnetic field in spinel MnV2O4

Takuro Katsufuji, Takayuki Ishikawa, Yosuke Ishitsuka

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Heat conduction in the system that releases or absorbs latent heat caused by the first-order phase transition gives rise to an intriguing problem. A typical example is seen in the system showing melting and solidification, where the domain boundary between the liquid and solid phase moves with time, known as moving boundary problems. We report in the present paper that a similar moving domain boundary is observed in an all-solid-state system, spinel MnV 2O4, where there is a first-order magnetic phase transition and the transition temperature changes with applied magnetic field. We found that in the sample attached to a heat bath with a constant temperature, thermal current flows (without external heat source) when the magnetic field is increased or decreased, associated with the release or absorption of the latent heat. We also found that the magnitude of the spontaneous heat current depends on the sweep rate of the magnetic field. We show that the experimental results, which have a nonlinear nature, can be reproduced by a simple model and simulation.

    Original languageEnglish
    Article number034602
    JournalJournal of the Physical Society of Japan
    Volume82
    Issue number3
    DOIs
    Publication statusPublished - 2013 Mar

    Fingerprint

    convective flow
    spinel
    latent heat
    magnetic fields
    heat
    heat sources
    conductive heat transfer
    solidification
    solid phases
    baths
    liquid phases
    transition temperature
    melting
    solid state
    simulation
    temperature

    Keywords

    • Domain boundary
    • Heat conduction
    • Phase transition

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Moving domain boundary and the spontaneous flow of thermal current controlled by magnetic field in spinel MnV2O4 . / Katsufuji, Takuro; Ishikawa, Takayuki; Ishitsuka, Yosuke.

    In: Journal of the Physical Society of Japan, Vol. 82, No. 3, 034602, 03.2013.

    Research output: Contribution to journalArticle

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