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

Mateusz Scigaj, Nico Dix, Jaume Gázquez, María Varela, Ignasi Fina, Neus Domingo, Gervasi Herranz, Vassil Skumryev, Josep Fontcuberta, Florencio Sánchez

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13 Citations (Scopus)

Abstract

© The Author(s) 2016. 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.
Original languageEnglish
Article number31870
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 23 Aug 2016

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