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Multiferroic nanocomposite fabrication via liquid phase using anodic alumina template
Go Kawamura1,2, Kazuhiro Ohara1, Wai Kian Tan3
1Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, Toyohashi, Japan.
Science and Technology of Advanced Materials
|August 8, 2018
Summary
Researchers developed a low-cost method to create multiferroic nanocomposites. This process uses an anodic alumina template to form cobalt iron oxide (CoFe2O4) nanotubes, which are then integrated with barium titanate (BaTiO3) for multiferroic properties.
Area of Science:
- Materials Science
- Nanotechnology
- Solid State Physics
Background:
- Multiferroic materials exhibit both ferromagnetic and ferroelectric properties.
- Developing cost-effective and scalable fabrication methods for multiferroic nanocomposites is crucial for technological applications.
- Nanostructured materials offer unique properties due to their high surface area and quantum confinement effects.
Purpose of the Study:
- To report a novel, inexpensive fabrication process for multiferroic nanocomposites.
- To create a CoFe2O4 nanotube array structure and integrate it with BaTiO3.
- To confirm the multiferroic properties of the resulting composite material.
Main Methods:
- Utilized a liquid-phase fabrication process involving an anodic alumina template.
- Employed sol-gel spin-coating to deposit ferrimagnetic CoFe2O4 onto the template.
- Dissolved the alumina template using NaOH to obtain CoFe2O4 nanotubes.
- Filled and sandwiched the CoFe2O4 nanotubes with ferroelectric BaTiO3 using sol-gel spin-coating.
Main Results:
- Successfully fabricated a multiferroic nanocomposite with a unique CoFe2O4 nanotube array structure.
- The composite material integrates ferrimagnetic CoFe2O4 with ferroelectric BaTiO3.
- Demonstrated multiferroicity by observing distinct magnetic and dielectric hysteresis loops.
Conclusions:
- The developed fabrication process is novel, inexpensive, and scalable.
- The resulting CoFe2O4/BaTiO3 nanocomposite exhibits promising multiferroic behavior.
- This method provides a new route for producing advanced multiferroic nanostructured materials.
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