High-temperature ferrimagnetic order triggered metal-to-insulator transition in CaCu3Ni2Os2O12
Ferromagnetic order-induced insulator-to-metal transitions via the double exchange mechanism have been studied widely. In contrast, ferromagnetic or ferrimagnetic spontaneous magnetization induced metal-to-insulator transitions (MITs), especially occurring above room temperature, remain extremely limited, although such magnetoelectric materials hold great potential for low-loss multifunctional electronic and spintronic devices. Here, a novel 3d/5d hybridized quadruple perovskite oxide, CaCu<sub>3</sub>Ni<sub>2</sub>Os<sub>2</sub>O<sub>12</sub>, was synthesized. It undergoes long-range Cu<sup>2+</sup>(↑)-Ni<sup>2+</sup>(↑)-Os<sup>6+</sup>(↓) ferrimagnetic order with a high Curie temperature of 393 K, maintaining a saturated magnetization of 2.15 μ<sub>B</sub>/f.u. at 300 K. Intriguingly, an MIT is found to occur concurrently at the Curie temperature. Theoretical analyses reveal that the ferrimagnetic spontaneous order significantly renormalizes the electronic band structure, which can be further modified by electronic correlation and spin-orbit coupling effects, leading to the MIT via the Lifshitz-type mechanism. This work thus provides a paradigm material to realize ferrimagnetic spontaneous magnetization induced MIT at a high critical temperature toward advanced applications.
Authors
- Zhiwei Hu (ORCID: https://orcid.org/0000-0003-0324-2227)
- Youwen Long (ORCID: https://orcid.org/0000-0002-8587-7818)
- Xubin Ye (ORCID: https://orcid.org/0000-0002-5739-8318)
- Chien‐Te Chen (ORCID: https://orcid.org/0000-0002-1881-2600)
- Philippe Ohresser (ORCID: https://orcid.org/0000-0001-8611-1753)
- Yi‐feng Yang (ORCID: https://orcid.org/0000-0002-6702-6091)
- Tao Xiang (ORCID: https://orcid.org/0000-0001-5998-7338)
- Pu Yu (ORCID: https://orcid.org/0000-0002-5513-7632)
- Xianggang Qiu (ORCID: https://orcid.org/0000-0002-0290-3938)
- Jinguang Cheng (ORCID: https://orcid.org/0000-0002-4969-1960)
- Chih‐Wen Pao (ORCID: https://orcid.org/0000-0001-7681-4391)
- Zhao Pan (ORCID: https://orcid.org/0000-0002-8693-2508)
- Lucie Nataf (ORCID: https://orcid.org/0000-0001-7662-6542)
- Jinbo Yang (ORCID: https://orcid.org/0000-0003-3517-9701)
- Zhongxing Liao (ORCID: https://orcid.org/0000-0002-2224-9478)
- Min Liu (ORCID: https://orcid.org/0000-0003-2248-4897)
- Xiao Wang (ORCID: https://orcid.org/0000-0001-8139-4192)
- Qianqian Wang (ORCID: https://orcid.org/0000-0003-3226-9517)
- Yunyu Yin
- Hong‐Ji Lin
- Yingying Cao (ORCID: https://orcid.org/0000-0001-6012-9445)
- F. Baudelet
- Wenyun Yang
Institutions
- Chinese Academy of Sciences (CN)
- Peking University (CN)
- Synchrotron soleil (FR)
- National Synchrotron Radiation Research Center (TW)
- Max Planck Institute for Chemical Physics of Solids (DE)
- Songshan Lake Materials Laboratory (CN)
- FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ)
- Institute of Physics (CN)
- National Laboratory for Superconductivity (CN)
- University of Chinese Academy of Sciences (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-04-21
- DOI
- https://doi.org/10.1038/s41467-025-59041-5
- Citations
- 4
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 5.03
Funders
- Deutsche Forschungsgemeinschaft
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Pohang University of Science and Technology
- China Postdoctoral Science Foundation