Probing the dielectric, piezoelectric and magnetic behavior of CoFe(2)O(4)/BNT-BT(0.08) composite thin film fabricated by sol-gel and spin-coating methods

We investigated in this paper a novel bilayer composite obtained by sol-gel and spin coating of the ferroelectric 0.92Na(0.5)Bi(0.5)TiO(3)–0.08BaTiO(3) (abbreviated as BNT-BT(0.08)) and ferromagnetic CoFe(2)O(4) phases, for miniature low-frequency magnetic sensors and piezoelectric sensors. This het...

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Detalles Bibliográficos
Autores principales: Cernea, Marin, Vasile, Bogdan Stefan, Surdu, Vasile Adrian, Trusca, Roxana, Bartha, Cristina, Craciun, Floriana, Galassi, Carmen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6294755/
https://www.ncbi.nlm.nih.gov/pubmed/30552360
http://dx.doi.org/10.1038/s41598-018-36232-3
Descripción
Sumario:We investigated in this paper a novel bilayer composite obtained by sol-gel and spin coating of the ferroelectric 0.92Na(0.5)Bi(0.5)TiO(3)–0.08BaTiO(3) (abbreviated as BNT-BT(0.08)) and ferromagnetic CoFe(2)O(4) phases, for miniature low-frequency magnetic sensors and piezoelectric sensors. This heterostructure, deposited on Si-Pt substrate (Si-Pt/CoFe(2)O(4)/BNT-BT(0.08)), 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. CoFe(2)O(4)/BNT-BT(0.08) 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.

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