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Updated: Jul 13, 2025
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Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs
Published on: January 17, 2020
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Chiral mesostructured NiFe2O4 films with chirality induced spin selectivity
Yiping Zhou1, Te Bai2, Yingying Duan1
1School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai, 200092, P. R. China. yyduan@tongji.edu.cn.
Chemical Communications (Cambridge, England)
|October 19, 2023
Summary
Chiral mesostructured nickel iron oxide films were synthesized. Chirality-induced spin selectivity was directly observed in these ferrimagnetic materials for the first time using advanced microscopy.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Chemistry
Background:
- Chirality is a fundamental property in nature, influencing molecular interactions and material properties.
- Exploring chiral magnetic materials is crucial for developing novel spintronic devices.
- Nickel iron oxide (NiFe2O4) is a promising ferrimagnetic material with potential applications in data storage and sensing.
Purpose of the Study:
- To synthesize chiral mesostructured nickel iron oxide films (CMNFFs).
- To investigate the phenomenon of chirality-induced spin selectivity (CISS) in these novel ferrimagnetic materials.
- To demonstrate a new method for observing CISS in magnetic thin films.
Main Methods:
- Hydrothermal synthesis using L-/D-tyrosine as chiral agents.
- Characterization of film structure and chirality.
- Chirality-dependent magnetic-tip conducting atomic force microscopy (mc-AFM) for CISS observation.
Main Results:
- Successful synthesis of chiral mesostructured NiFe2O4 films.
- Direct observation of chirality-induced spin selectivity in ferrimagnetic CMNFFs.
- Demonstration of mc-AFM as a viable technique for probing CISS in magnetic materials.
Conclusions:
- Chiral mesostructured NiFe2O4 films exhibit chirality-induced spin selectivity.
- The findings open new avenues for designing chiral magnetic materials for spintronics.
- This study establishes a direct link between material chirality and spin-selective transport in ferrimagnets.
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