Magnetic susceptibility and specific heat of a spinel MnV2O 4 single crystal

Myung Whun Kim, J. S. Kim, Takuro Katsufuji, R. K. Kremer

    Research output: Contribution to journalArticle

    27 Citations (Scopus)

    Abstract

    We investigated the magnetic and the thermodynamic properties of a spinel MnV2O4 single crystal. The magnetization and susceptibility show the signature of ferromagnetic ordering at ~61 K. A sharp peak in the magnetization and the specific heat indicate the structural phase transition at 58 K, consistent with the scattering experiments. The specific-heat data exhibits the signature of double transitions. In addition to the higher-temperature transition at TS, the second transition occurs at a lower temperature T⊃*, which divides the phase below T S into a low-magnetic-field and a high-magnetic-field phase. Based on the magnetic susceptibility and the specific heat, a wide-range temperature and magnetic-field phase diagram was constructed. The low-magnetic-field phase shows the characteristics of a spin-glass-like state. A comparison with the magnetic and thermodynamic characteristics of similar materials suggests that the low temperature and low-magnetic-field, spin-glass-like phase in MnV 2O4 may originate from the competition between the interchain and the intrachain exchange interaction owing to the fluctuating V-ion orbitals.

    Original languageEnglish
    Article number024403
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume83
    Issue number2
    DOIs
    Publication statusPublished - 2011 Jan 19

    Fingerprint

    Magnetic susceptibility
    Specific heat
    spinel
    specific heat
    Single crystals
    Magnetic fields
    magnetic permeability
    heat
    single crystals
    magnetic fields
    Spin glass
    spin glass
    Magnetization
    signatures
    magnetization
    Exchange interactions
    Superconducting transition temperature
    Phase diagrams
    Temperature distribution
    temperature distribution

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials

    Cite this

    Magnetic susceptibility and specific heat of a spinel MnV2O 4 single crystal. / Kim, Myung Whun; Kim, J. S.; Katsufuji, Takuro; Kremer, R. K.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 83, No. 2, 024403, 19.01.2011.

    Research output: Contribution to journalArticle

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    AU - Katsufuji, Takuro

    AU - Kremer, R. K.

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    N2 - We investigated the magnetic and the thermodynamic properties of a spinel MnV2O4 single crystal. The magnetization and susceptibility show the signature of ferromagnetic ordering at ~61 K. A sharp peak in the magnetization and the specific heat indicate the structural phase transition at 58 K, consistent with the scattering experiments. The specific-heat data exhibits the signature of double transitions. In addition to the higher-temperature transition at TS, the second transition occurs at a lower temperature T⊃*, which divides the phase below T S into a low-magnetic-field and a high-magnetic-field phase. Based on the magnetic susceptibility and the specific heat, a wide-range temperature and magnetic-field phase diagram was constructed. The low-magnetic-field phase shows the characteristics of a spin-glass-like state. A comparison with the magnetic and thermodynamic characteristics of similar materials suggests that the low temperature and low-magnetic-field, spin-glass-like phase in MnV 2O4 may originate from the competition between the interchain and the intrachain exchange interaction owing to the fluctuating V-ion orbitals.

    AB - We investigated the magnetic and the thermodynamic properties of a spinel MnV2O4 single crystal. The magnetization and susceptibility show the signature of ferromagnetic ordering at ~61 K. A sharp peak in the magnetization and the specific heat indicate the structural phase transition at 58 K, consistent with the scattering experiments. The specific-heat data exhibits the signature of double transitions. In addition to the higher-temperature transition at TS, the second transition occurs at a lower temperature T⊃*, which divides the phase below T S into a low-magnetic-field and a high-magnetic-field phase. Based on the magnetic susceptibility and the specific heat, a wide-range temperature and magnetic-field phase diagram was constructed. The low-magnetic-field phase shows the characteristics of a spin-glass-like state. A comparison with the magnetic and thermodynamic characteristics of similar materials suggests that the low temperature and low-magnetic-field, spin-glass-like phase in MnV 2O4 may originate from the competition between the interchain and the intrachain exchange interaction owing to the fluctuating V-ion orbitals.

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