Local Nanoelectromechanical Properties of Multiferroics Gd-Doped BiFeO3-BaTiO3 Solid Solution
authors Rai, R; Duarte, P; Bdikin, I; Valente, MA; Marques, PA; Gracio, J; Kholkin, AL
nationality International
journal JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
author keywords Ceramics; Dielectric Properties; Phase Transitions; Ferroelectricity; Magnetic Properties
keywords ELECTRICAL-PROPERTIES; WEAK FERROMAGNETISM; BIFEO3 CERAMICS; IMPEDANCE
abstract Bi1-x-yGdxBayFe1-yTiyO3 (x = 0.1 and y = 0.1, 0.2, 0.3) solid solutions have been prepared via solid state reaction method with the aim to obtaining magnetoelectric coupling (i.e., linear relation between magnetization and electric field) at room temperature. Optimum calcination and sintering strategies for obtaining pure perovskite phase, high density ceramics and homogeneous microstructures have been determined. The maximum ferroelectric transition temperature (T-c) of this system was 150-170 degrees C with the dielectric constant peak of 2300 at 100 kHz for y = 0.1. Well saturated piezoelectric loops were observed for all composition indicating room temperature ferroelectricity. Hardness and Young's modulus decrease with depth and with increasing concentration y.
publisher AMER SCIENTIFIC PUBLISHERS
issn 1533-4880
year published 2012
volume 12
issue 8
beginning page 6639
ending page 6644
digital object identifier (doi) 10.1166/jnn.2012.4559
web of science category Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
subject category Chemistry; Science & Technology - Other Topics; Materials Science; Physics
unique article identifier WOS:000308379900082
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