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Published on: July 20, 2022
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CO2 -Induced Spin-Lattice Coupling for Strong Magnetoelectric Materials
1College of Materials Science & Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|November 17, 2023
Summary
Researchers developed novel 2D magnetoelectric (ME) nanocomposites using barium titanate (BTO) and cobalt ferrite (CFO). These materials exhibit strong ME coupling, paving the way for advanced data storage technologies.
Area of Science:
- Materials Science
- Nanotechnology
- Condensed Matter Physics
Background:
- 2D magnetoelectric (ME) nanomaterials are essential for next-generation storage devices requiring fast read/write capabilities.
- Strong ME coupling in these materials is key to achieving high performance.
Purpose of the Study:
- To prepare 2D barium titanate (BTO)-cobalt ferrite (CFO) ME nanocomposites with enhanced ME coupling.
- To investigate the role of strain effects in improving ferroelectricity and ferrimagnetism.
Main Methods:
- Substrate-free coupling strategy utilizing supercritical CO2.
- Alternating in-plane and out-of-plane epitaxy stacking to create 2D BTO-CFO nanocomposites.
- Analysis of spin-lattice coupling and strain effects.
Main Results:
- Achieved strong mutual biaxial strain effects through epitaxy stacking.
- Significantly enhanced ferroelectricity in BTO and ferrimagnetism in CFO.
- Obtained an exceptionally high ME coupling coefficient of 325.8 mV cm⁻¹ Oe⁻¹.
Conclusions:
- The developed 2D BTO-CFO nanocomposites demonstrate superior ME coupling.
- The substrate-free strategy and strain engineering are effective for enhancing ME properties.
- These findings offer a promising pathway for advanced electronic and spintronic devices.
Keywords:
biaxial strainmagnetoelectric nanomaterialsnanocompositesself-assemblyspin-lattice couplingMore Related Videos
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