Correlation between magnetic, dielectric properties and crystal structure in Mn T2 O4 (T = V, Cr, Mn)

T. Suzuki, K. Adachi, Takuro Katsufuji

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    We measured the temperature dependence of dielectric constant (ε1) and lattice striction (Δ L / L) for MnV2 O4, Mn3 O4, and MnCr2 O4. For MnV2 O4 and Mn3 O4, which have the orbital degree of freedom in the t2 g or eg orbitals of the transition metal on the octahedral site, a critical decrease of ε1 and Δ L / L at the ferrimagnetic transition temperature (TN) was observed. On the other hand, MnCr2 O4 which has no orbital degree of freedom, anomalies in ε1 and Δ L / L at TN are barely observed. These results indicate that the orbital degree of freedom is a key factor for the correlation between magnetic, dielectric properties and crystal structure in the series of Mn T2 O4.

    Original languageEnglish
    Pages (from-to)780-781
    Number of pages2
    JournalJournal of Magnetism and Magnetic Materials
    Volume310
    Issue number2 SUPPL. PART 1
    DOIs
    Publication statusPublished - 2007 Mar

    Fingerprint

    Dielectric properties
    Superconducting transition temperature
    Transition metals
    dielectric properties
    Permittivity
    Crystal structure
    orbitals
    crystal structure
    degrees of freedom
    transition temperature
    Temperature
    transition metals
    permittivity
    anomalies
    temperature dependence

    Keywords

    • Magnetocapacitance
    • Magnetostriction
    • Orbital degree of freedom
    • Spinel

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Correlation between magnetic, dielectric properties and crystal structure in Mn T2 O4 (T = V, Cr, Mn). / Suzuki, T.; Adachi, K.; Katsufuji, Takuro.

    In: Journal of Magnetism and Magnetic Materials, Vol. 310, No. 2 SUPPL. PART 1, 03.2007, p. 780-781.

    Research output: Contribution to journalArticle

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    AB - We measured the temperature dependence of dielectric constant (ε1) and lattice striction (Δ L / L) for MnV2 O4, Mn3 O4, and MnCr2 O4. For MnV2 O4 and Mn3 O4, which have the orbital degree of freedom in the t2 g or eg orbitals of the transition metal on the octahedral site, a critical decrease of ε1 and Δ L / L at the ferrimagnetic transition temperature (TN) was observed. On the other hand, MnCr2 O4 which has no orbital degree of freedom, anomalies in ε1 and Δ L / L at TN are barely observed. These results indicate that the orbital degree of freedom is a key factor for the correlation between magnetic, dielectric properties and crystal structure in the series of Mn T2 O4.

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