Structural, electrical and multiferroic properties of Nb-doped Bi7Fe3Ti3O21 thin films


The effects of donor Nb5+-ion doping on the structural, electrical, and multiferroic properties of an Aurivillius Bi7Fe3Ti3O21 thin film were investigated. Incorporation of Nb5+-ions into the Ti4+-sites of the Bi7Fe3Ti3O21 thin film resulted in a substantial improvement of its electrical and multiferroic properties. From the study of the electrical properties, the Bi7Fe3Ti2.94Nb0.06O21+δ thin film exhibited a low leakage current density of 5.11×10-6 A/cm2at 100 kV/cm, which was about one order of magnitude lower than that of the untreated Bi7Fe3Ti3O21 thin film. The ferroelectric P -E hysteresis loops of the Bi7Fe3Ti2.94Nb0.06O21+δthin film showed a large remnant polarization (2Pr) of 20.6 μC/cm2 at 630 kV/cm whereas the 2Pr value measured for the untreated Bi7Fe3Ti3O21 thin film was 3.5 μC/cm2at 318 kV/cm. Furthermore, a well-saturated magnetic hysteresis loop with an enhanced magnetization was observed for the Bi7Fe3Ti2.94Nb0.06O21+ δthin film at room temperature.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Uncontrolled Keywords: Chemical solution deposition,Electrical properties,Multiferroic properties,Nb-doped BiFeTiO thin film,Physics and Astronomy(all)
Publication ISSN: 0374-4914
Last Modified: 08 Jan 2024 09:20
Date Deposited: 14 Oct 2019 09:04
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
http://www.npsm ... e=542&year=2015 (Publisher URL)
PURE Output Type: Article
Published Date: 2015-06-01
Accepted Date: 2015-05-10
Authors: Raghavan, Chinnambedu Murugesan (ORCID Profile 0000-0003-3521-4255)
Kim, Jin Won
Kim, Sang Su


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