@conference{
author = "Bobić, Jelena and Deluca, Marco and Ilić, Nikola and Vijatović Petrović, Mirjana and Džunuzović, Adis and Kaliyaperumal Veerapandiyan, Vignaswaran and Stojanović, Biljana D",
year = "2019",
abstract = "One of the most important single-phase multiferroic materials with Aurivillius
structure is Bi5Ti3FeO15 (BFT) which generally yields a magnetoelectric coupling
above room temperature with a magnetoelectric coefficient of 10 mV/cmOe [1]. It
has a special interest in this family of compounds because it is a combination of
multiferroic BiFeO3 and ferroelectric Bi4Ti3O12 and can be used as new
magnetoelectric material for different devices. Years of intensive research have
shown that the main lack of this material is high electrical conductivity and hence
the low ferro-electromagnetic properties. This is a common problem in single-phase
multiferroics, in general. Although they are expected to produce an applications
breakthrough, they show poor properties at room temperature. Since BFT has the
capability to host ions of different size, multiferroic properties could be improved by
using dopants or ionic substitutions on different A and B-sites within the perovskitelike
layers [2]. Insertion of magnetic ion such as Co3+ at B-sites could increase the
remnant magnetization in BFT ceramics while Y3+ could enhance the dielectric and
ferroelectric properties.
To this respect, Co2+ and Y3+ doped BFT were prepared by the solid state
reaction method according to formulas: Bi1-xYxTi3FeO15 (x = 0.1, 0.2, 0.3) and
BiTi3Fe1-yCoyO15 (y = 0.1, 0.3, 0.5). XRD data confirm the formation of singlephase
Aurivillius compounds. SEM micrographs show an evident decrease in grain
size of Co modified ceramics in comparison with pure BFT while there is no
particular change of the grain size with Y doping. The ferroelectric and magnetic
properties of all ceramic composites were also studied. Raman spectroscopy in
dependence of temperature was used to give an insight to the possible ferroelectric
character of BFT and also the way that dopants could influence the structural
mechanism affecting the material’s properties at the main magnetic and ferroelectric
transitions.",
publisher = "Institute for Multidisciplinary Research, University of Belgrade Kneza Višeslava 1, 11000 Belgrade, Serbia",
journal = "5th Conference of The Serbian Society for Ceramic Materials",
title = "FERROELECTRIC, MAGNETIC AND RAMAN SPECTRA MEASUREMENTS OF Bi5Ti3FeO15 AURIVILLIUS-BASED MULTIFERROIC MATERIALS",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_2479"
}
