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- Title
High-Pressure Synthesis and Magnetic Property of a Novel Ferrimagnetic Quadruple Perovskite YM<sub>n3</sub>Co<sub>4</sub>O<sub>12</sub>.
- Authors
Atsushi Tanaka; Ikuya Yamada; Shogo Kawaguchi
- Abstract
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 Im<span style="text-decoration: overline;">3</span> (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.
- Subjects
MAGNETIC properties; X-ray powder diffraction; RIETVELD refinement; VALENCE bonds; PEROVSKITE; SPACE groups; SYNCHROTRONS; MANGANITE; NEUTRON diffraction
- Publication
Materials Transactions, 2023, Vol 64, Issue 9, p2105
- ISSN
1345-9678
- Publication type
Article
- DOI
10.2320/matertrans.MT-MG2022004