Magnetic‐Field Controllable Displacement‐Type Ferroelectricity Driven by Off‐Center Fe<sup>2+</sup> Ions in CaFe<sub>3</sub>Ti<sub>4</sub>O<sub>12</sub> Perovskite
Abstract Displacement‐type ferroelectrics usually exclude magnetic d ‐electron contribution. Applying a magnetic field thus can little change the electric polarization. Herein, a magnetic ionic driven displacement‐type perovskite ferroelectric CaFe 3 Ti 4 O 12 is reported. In this compound, magnetic Fe 2+ ions contribute to both ferroelectric and antiferromagnetic orders respectively at T C ≈107 and T N ≈ 3.1 K, resulting in coupled electric and magnetic domains. A moderate magnetic field can induce a metamagnetic transition toward ferromagnetic correlations. External magnetic fields can thus readily tune the magnetic and the joint ferroelectric domains, giving rise to exceptional magnetic‐field controllable displacement‐type polarization with a large magnetoelectric (ME) coupling coefficient. This study opens up a new avenue to find unprecedented ME effects in displacement‐type ferroelectrics for numerous applications.
Authors
- Zhiwei Hu (ORCID: https://orcid.org/0000-0003-0324-2227)
- Xingxing Jiang (ORCID: https://orcid.org/0000-0001-8815-3914)
- Youwen Long (ORCID: https://orcid.org/0000-0002-8587-7818)
- Xubin Ye (ORCID: https://orcid.org/0000-0002-5739-8318)
- Haoting Zhao (ORCID: https://orcid.org/0009-0007-9656-5709)
- Dabiao Lu (ORCID: https://orcid.org/0009-0006-5489-2835)
- Maocai Pi
- Jie Zhang (ORCID: https://orcid.org/0009-0006-9055-2969)
- Yi‐feng Yang (ORCID: https://orcid.org/0000-0002-6702-6091)
- Pu Yu (ORCID: https://orcid.org/0000-0002-5513-7632)
- Denis Sheptyakov (ORCID: https://orcid.org/0000-0002-3001-6586)
- Zhao Pan (ORCID: https://orcid.org/0000-0002-8693-2508)
- Zhehong Liu
- Xueqiang Zhang (ORCID: https://orcid.org/0009-0008-4096-4281)
- Yingying Cao (ORCID: https://orcid.org/0000-0001-6012-9445)
Institutions
- Chinese Academy of Sciences (CN)
- Paul Scherrer Institute (CH)
- Max Planck Institute for Chemical Physics of Solids (DE)
- Songshan Lake Materials Laboratory (CN)
- Technical Institute of Physics and Chemistry (CN)
- Institute of Physics (CN)
- University of Chinese Academy of Sciences (CN)
- Tsinghua University (CN)
Publication Details
- Journal
- Advanced Functional Materials
- Published
- 2024-08-16
- DOI
- https://doi.org/10.1002/adfm.202411133
- Citations
- 11
- Primary Topic
- Multiferroics and related materials
- Type
- article
- Field-Weighted Citation Impact
- 1.30
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Natural Science Foundation of Beijing Municipality
- National Key Research and Development Program of China