title: Local nanoelectromechanical properties of multiferroics Gd-doped BiFeO3-BaTiO3 solid solution.
abstract: Bi(1-x-y)GdxBayFe(1-y)TiyO3 (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 (Tc) 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.
authors.affiliation: CICECO and Department of Ceramics and Glass Engineering, University of Aveiro, Aveiro, Portugal.
authors.forename: Radheshyam
authors.initials: R
authors.lastname: Rai
authors.forename: Pedro
authors.initials: P
authors.lastname: Duarte
authors.forename: Igor
authors.initials: I
authors.lastname: Bdikin
authors.forename: Manuel Almeida
authors.initials: MA
authors.lastname: Valente
authors.forename: Paula Alexandrina
authors.initials: PA
authors.lastname: Marques
authors.forename: Jose
authors.initials: J
authors.lastname: Gracio
authors.forename: Andrei L
authors.initials: AL
authors.lastname: Kholkin
mesh_terms: D001464:Barium / Q000737:chemistry*; D001729:Bismuth / Q000737:chemistry*; D055664:Electrochemical Techniques; D005290:Ferric Compounds / Q000737:chemistry*; D005682:Gadolinium / Q000737:chemistry*; D036103:Nanotechnology; D012996:Solutions; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D005290:Ferric Compounds; D012996:Solutions; C000499:ferric oxide; D001464:Barium; D005682:Gadolinium; D014025:Titanium; D001729:Bismuth