Constrained titanohematite formation at BTO/Fe interfaces deposited by RF-sputtering
authors Amorim, CO; Sloyan, K; Correia, MR; Lourenco, AACS; Dahlem, MS; Amaral, VS
nationality International
journal JOURNAL OF ALLOYS AND COMPOUNDS
author keywords Titanohematite; Magnetoelectric coupling; Multiferroics; Interfaces; RF-sputtering
keywords MAGNETIC-PROPERTIES; BARIUM-TITANATE; IRON-OXIDES; RAMAN-SPECTROSCOPY; THIN-FILMS; STRUCTURAL-CHARACTERIZATION; BAND-GAP; HEMATITE; TEMPERATURE; ALPHA-FE2O3
abstract 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.
publisher ELSEVIER SCIENCE SA
issn 0925-8388
isbn 1873-4669
year published 2020
volume 828
digital object identifier (doi) 10.1016/j.jallcom.2020.154244
web of science category Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering
subject category Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
unique article identifier WOS:000522634300015
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journal analysis (jcr 2019):
journal impact factor 4.65
5 year journal impact factor 4.082
category normalized journal impact factor percentile 77.703
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