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Updated: Mar 15, 2026

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Published on: March 24, 2019
Modulating Magnetic Properties by Tailoring In-Plane Domain Structures in Hexagonal YMnO3 Films
Shiqing Deng1, Shaobo Cheng1,2, Ming Liu3
1National Center for Electron Microscopy in Beijing, School of Materials Science and Engineering, The State Key laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials (MOE), Tsinghua University , Beijing 100084, P.R. China.
Complex oxide heterojunctions exhibit exotic properties due to periodic structures. This study reveals self-assembling in-plane domains in hexagonal YMnO3 thin films, leading to unique magnetic states and potential magnetoelectric coupling.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Solid State Chemistry
Background:
- Complex oxide heterojunctions offer exotic properties from multiorder parameter coupling.
- Self-assembling periodic structures are key to novel material functionalities.
Purpose of the Study:
- Investigate self-assembling in-plane periodic domain structures in hexagonal YMnO3 thin films.
- Explore the resulting magnetic states and potential for magnetoelectric coupling.
Main Methods:
- Fabrication of hexagonal YMnO3 thin films on c-face sapphire substrates.
- Atomic-level structural investigations using advanced microscopy.
- Characterization of magnetic properties and ferroelectric polarization.
Main Results:
- Observed self-assembling in-plane periodic domain structure with alternating domains under strain.
- Demonstrated ferromagnetic enhancement and an unexpected spin glass state below 38 K.
- Confirmed ferroelectric polarization, indicating potential for magnetoelectric coupling.
Conclusions:
- In-plane microstructures in hexagonal YMnO3 films are closely linked to magnetic properties.
- Strain engineering offers a pathway to tune coupling effects in these films.
- Potential for device applications leveraging emergent magnetic and magnetoelectric properties.
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