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Enhancement of Multiferroic Properties in BiFeO 3 –Ba(Cu 1/3 Nb 2/3 )O 3 : Film Fabricated by Aerosol Deposition
Author(s) -
Ryu Jungho,
Baek ChangWoo,
Lee YongSeok,
Oh NamKeun,
Han Guifang,
Kim JongWoo,
Hahn ByungDong,
Choi JongJin,
Yoon WoonHa,
Choi JoonHwan,
Park DongSoo,
Jeong DaeYong
Publication year - 2011
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2010.04315.x
Subject(s) - multiferroics , materials science , tetragonal crystal system , bismuth ferrite , ferroelectricity , dielectric , crystallite , phase boundary , lattice constant , annealing (glass) , condensed matter physics , crystal structure , crystallography , composite material , phase (matter) , diffraction , metallurgy , optoelectronics , optics , chemistry , physics , organic chemistry
Lead‐free tetragonal Ba(Cu 1/3 Nb 2/3 )O 3 (BCN) was chosen to enhance the multiferroic characteristics of rhombohedral BiFeO 3 (BFO). When the aerosol‐deposited film with a composition of 0.9BFO–0.1BCN, chosen to be near that of the morphotropic phase boundary, was annealed at 600°C for 1 h, the film showed superior dielectric, ferroelectric, and magnetic properties to those of pure polycrystalline BFO films. TEM revealed that BCN addition and subsequent annealing process enlarged the lattice constant of the BFO film along the 〈111〉 direction. The greatly enhanced multiferroic properties were attributed to the distorted lattice structure induced by the BCN addition and the high residual stress effect.