Related Experiment Video
Updated: Jun 16, 2026
Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
Realization of High-Temperature Multiferroicity in K-Bi-Based Hybrid Double Perovskites via Interaction Engineering
Zi-Ao Qiu1, Wei-Jia Zhu1, Zai Xiu1
1Chaotic Matter Science Research Center, International Institute for Innovation, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, JiangXi University of Science and Technology, Ganzhou, Jiangxi CN 341000, China.
Researchers developed a novel one-dimensional van der Waals mixed-halogen double perovskite multiferroic. Introducing bromine atoms lowers the energy barrier for polarity switching, enabling stable ferroelectric ordering and revealing the importance of halogen regulation.
Area of Science:
- Materials Science
- Solid State Physics
- Crystallography
Background:
- Organic-inorganic hybrid perovskites (OIHPs) are promising for multiferroicity.
- Current research primarily modifies cations, neglecting halogen roles in inorganic frameworks.
- Designing halogen-based multiferroics in double perovskites is underexplored.
Purpose of the Study:
- To investigate the impact of mixed-halogen incorporation on multiferroic properties in double perovskites.
- To explore a new 1D van der Waals mixed-halogen double perovskite multiferroic material.
- To demonstrate a novel strategy for designing multiferroic materials.
Main Methods:
- Synthesis of a novel 1D van der Waals mixed-halogen double perovskite, [RB3HQ]2KBiCl4Br4 (KBX).
- Characterization of ferroelectricity via polarization-electric field hysteresis loops.
- Observation of ferroelastic domain structures.
Main Results:
- The synthesized material, KBX, exhibits coexisting ferroelectricity and ferroelasticity.
- Bromine incorporation effectively lowers the energy barrier for polarity switching.
- Stable ferroelectric ordering and typical ferroelectric hysteresis were observed below the Curie temperature.
Conclusions:
- Mixed-halogen regulation is crucial for promoting ferroelectric ordering in double perovskites.
- This study provides an effective experimental strategy for designing novel multiferroic materials.
- The findings open new avenues for exploring multiferroics within the double perovskite system.
