Metamagnetic Behavior in a Quadruple Perovskite Oxide

• Published in: Inorganic chemistry Vol. 60; no. 10; pp. 7023 - 7030
• Main Authors: Okazaki, Yuichi, Kato, Yuta, Kizawa, Yuta, Oda, Seiji, Uemura, Kai, Nishio, Takuya, Fujii, Fuminari, Fujinari, Shintaro, Kinoshita, Masaya, Odake, Takao, Togano, Hayato, Kamegawa, Takashi, Kawaguchi, Shogo, Yamamoto, Hajime, Ikeno, Hidekazu, Yagi, Shunsuke, Wada, Kouhei, Ahn, Kyo-Hoon, Hariki, Atsushi, Yamada, Ikuya
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 17.05.2021
• ISSN: 0020-1669; 1520-510X
• DOI: 10.1021/acs.inorgchem.0c03432

A cubic quadruple perovskite oxide CeMn3Cr4O12 has been synthesized under high-pressure and high-temperature conditions of 8 GPa and 1273 K. The X-ray absorption spectroscopy reveals that the Ce ions are in a trivalent state, as represented by the ionic model of Ce3+Mn3+ 3Cr3+ 4O12. The magnetic study demonstrates three independent antiferromagnetic transitions attributed to Ce (∼10 K), Mn (46 K), and Cr (133 K) ions. Furthermore, a magnetic field-induced antiferromagnetic-to-ferromagnetic (metamagnetic) transition of Ce3+ 4f moments is observed at low temperatures below 20 K, exhibiting a rare example of metamagnetism in the Ce3+-oxides. This finding represents that the 3d-electron magnetic sublattices play a role in the metamagnetism of 4f-electron magnetic moments, demonstrating a new aspect of the 3d–4f complex electron systems.