High-Pressure Synthesis and Magnetic Property of a Novel Ferrimagnetic Quadruple Perovskite YMn₃Co₄O₁₂

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  • Tanaka Atsushi
    Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University
  • Yamada Ikuya
    Department of Materials Science, Graduate School of Engineering, Osaka Prefecture University
  • Kawaguchi Shogo
    Japan Synchrotron Radiation Research Institute (JASRI)

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  • High-Pressure Synthesis and Magnetic Property of a Novel Ferrimagnetic Quadruple Perovskite YMn<sub>3</sub>Co<sub>4</sub>O<sub>12</sub>

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<p>A novel quadruple perovskite oxide YMn3Co4O12 has been synthesized in high-pressure and high-temperature conditions of 16 GPa and 1473 K, respectively. Rietveld refinement of synchrotron X-ray powder diffraction data reveals that this oxide crystallizes in a cubic quadruple perovskite structure in a space group of Im3 (No. 204) with a 1:3-type atomic ordering of Y and Mn at A-sites, and the bond valence analysis suggests the valence state of YMn3+3Co3+4O12. A ferromagnetic-like transition is observed at ∼125 K and the magnetization value reaches up to ∼3 μB per formula unit at 5 K. The low-temperature magnetic state can be interpreted as ferrimagnetism with antiparallel alignment of A′-site Mn3+ (S = 2) and B-site Co3+ (high-spin, S = 2), which is in contrast to the antiferromagnetism in other A′-Mn-containing quadruple perovskite oxides. This finding proposes that the coexistence of A′-Mn3+ and B-Co3+ leading to ferrimagnetic state is realized in the specific structure with distinct crystallographic sites.</p>

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  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 64 (9), 2105-2108, 2023-09-01

    公益社団法人 日本金属学会

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