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Magnetoelectric nanoparticles shape modulates their electrical output
A Marrella1, G Suarato1, S Fiocchi1
1Cnr-Istituto di Elettronica e di Ingegneria dell'Informazione e delle Telecomunicazioni, Milano, Italy.
Frontiers in Bioengineering and Biotechnology
|September 11, 2023
Summary
Elongated core-shell magnetoelectric nanoparticles (MENPs) show enhanced magnetoelectric coupling (αME) compared to spherical ones. This is due to increased interface area and optimal orientation, improving nanostructure design.
Area of Science:
- Materials Science
- Nanotechnology
- Physics
Background:
- Core-shell magnetoelectric nanoparticles (MENPs) offer tunable magnetoelectric effects.
- Understanding the influence of nanoparticle shape on magnetoelectric coupling is crucial for device applications.
Purpose of the Study:
- To investigate the magnetoelectric behavior of core-shell MENPs with varying shapes.
- To determine the magnetoelectric coupling coefficient (αME) using finite element analysis.
- To elucidate the relationship between MENP geometry and magnetoelectric performance.
Main Methods:
- Finite element analysis (FEA) was employed to simulate MENPs.
- Simulations considered both static (DC) and time-variant (AC) magnetic fields.
- The magnetoelectric coupling coefficient (αME) was calculated for different nanoparticle morphologies.
Main Results:
- Elongated MENPs demonstrated a superior magnetoelectric coupling coefficient (αME) compared to spherical counterparts.
- This enhancement is attributed to a larger interfacial surface area and favorable geometrical orientation.
- The findings were consistent under both DC and AC magnetic field conditions.
Conclusions:
- Nanoparticle morphology significantly impacts magnetoelectric performance.
- High-aspect ratio MENPs are promising for enhanced magnetoelectric applications.
- This study provides insights for designing advanced magnetoelectric nanostructures.
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