resumo
The usage of heterostructures of ferromagnetic and ferroelectric materials, as a means of achieving magnetoelectric multiferroic coupling, is a widely used approach which has been showing promising results. Along this line of thought, the deposition of BaTiO3 and Fe multilayers on LaAlO3, MgO, Al2O3 and SrTiO3 substrates using RF-magnetron sputtering was carried out to study its viability to produce magnetoelectric heterostructures. It is shown that each substrate constrains the growth of the deposited thin films, even for the same deposition conditions. This is clearly seen through the magnetic properties of the thin film, mainly after performing a 900 degrees C thermal annealing in air. The thermal annealing results in the creation of iron oxides specific of each one of the substrates where the deposition took place. (c) 2020 Elsevier B.V. All rights reserved.
palavras-chave
MAGNETIC-PROPERTIES; BARIUM-TITANATE; IRON-OXIDES; RAMAN-SPECTROSCOPY; THIN-FILMS; STRUCTURAL-CHARACTERIZATION; BAND-GAP; HEMATITE; TEMPERATURE; ALPHA-FE2O3
categoria
Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
autores
Amorim, CO; Sloyan, K; Correia, MR; Lourenco, AACS; Dahlem, MS; Amaral, VS
nossos autores
Carlos Amorim
Investigador Auxiliaragradecimentos
This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020, financed by national funds through the FCT/MEC and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement. FCT is also acknowledged for the grant SFRH/BD/93336/2013 (C.O. Amorim). M R Correia acknowledges FCT Portuguese Foundation for Science and Technology under the projects UID/CTM/50025/2019.