Monolithic integration of room-temperature multifunctional BaTiO(3)-CoFe(2)O(4) epitaxial heterostructures on Si(001)

The multifunctional (ferromagnetic and ferroelectric) response at room temperature that is elusive in single phase multiferroic materials can be achieved in a proper combination of ferroelectric perovskites and ferrimagnetic spinel oxides in horizontal heterostructures. In this work, lead-free CoFe(...

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Detalles Bibliográficos
Autores principales: Scigaj, Mateusz, Dix, Nico, Gázquez, Jaume, Varela, María, Fina, Ignasi, Domingo, Neus, Herranz, Gervasi, Skumryev, Vassil, Fontcuberta, Josep, Sánchez, Florencio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4994007/
https://www.ncbi.nlm.nih.gov/pubmed/27550543
http://dx.doi.org/10.1038/srep31870
Descripción
Sumario:The multifunctional (ferromagnetic and ferroelectric) response at room temperature that is elusive in single phase multiferroic materials can be achieved in a proper combination of ferroelectric perovskites and ferrimagnetic spinel oxides in horizontal heterostructures. In this work, lead-free CoFe(2)O(4)/BaTiO(3) bilayers are integrated with Si(001) using LaNiO(3)/CeO(2)/YSZ as a tri-layer buffer. They present structural and functional properties close to those achieved on perovskite substrates: the bilayers are fully epitaxial with extremely flat surface, and exhibit robust ferromagnetism and ferroelectricity at room temperature.

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