Probing the dielectric, piezoelectric and magnetic behavior of CoFe2O4/BNT-BT0.08 composite thin film fabricated by sol-gel and spin-coating methods.
Marin CerneaBogdan Ştefan VasileVasile Adrian SurduRoxana TruscaCristina BarthaFloriana CraciunCarmen GalassiPublished in: Scientific reports (2018)
We investigated in this paper a novel bilayer composite obtained by sol-gel and spin coating of the ferroelectric 0.92Na0.5Bi0.5TiO3-0.08BaTiO3 (abbreviated as BNT-BT0.08) and ferromagnetic CoFe2O4 phases, for miniature low-frequency magnetic sensors and piezoelectric sensors. This heterostructure, deposited on Si-Pt substrate (Si-Pt/CoFe2O4/BNT-BT0.08), was characterized using selected method such as: X-ray diffraction, dielectric spectroscopy, piezoelectric force microscopy, SQUID magnetometry, atomic force microscopy/magnetic force microscopy, and advanced methods of transmission electron microscopy. CoFe2O4/BNT-BT0.08 ferromagnetic-piezoelectric thin films show good magnetization, dielectric constant and piezoelectric response. The results of analyses and measurements reveal that this heterostructure can have applications in high-performance magnetoelectric devices at room temperature.
Keyphrases
- room temperature
- single molecule
- atomic force microscopy
- electron microscopy
- high speed
- molecularly imprinted
- ionic liquid
- high resolution
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- genome wide
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- high throughput
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- quantum dots
- hyaluronic acid
- molecular dynamics simulations
- tandem mass spectrometry
- solid phase extraction
- crystal structure
- contrast enhanced
- liquid chromatography