abstract
Room-temperature crystal structure and multiferroic properties of the Bi0.92Nd0.08Fe1-xMnxO3 (x <= 0.3) ferromanganites have been studied to reveal the effect of Mn doping on the magnetic and ferroelectric behaviors of the lanthanide-modified compound representing a polar (space group R3c) predominantly antiferromagnetic phase of the Bi(1-x)Ln(x)FeO(3) perovskites. B-site substitution tends to suppress existing polar displacements and induces a ferroelectric-to-antiferroelectric transition near x = 0.2. The threshold concentration inducing the structural transformation does not coincide with that required to change the dominant magnetic interaction, so a weak ferromagnetic/ferroelectric state unusual for the Bi(1-x)Ln(x)FeO(3) and BiFe1-xMnxO3 series appears in the intermediate concentration range near the polar/nonpolar phase boundary. (C) 2013 AIP Publishing LLC.
keywords
BISMUTH FERRITE; MAGNETIC-PROPERTIES; SINGLE-PHASE; BIFEO3; TRANSITIONS; CERAMICS; CRYSTAL; ND
subject category
Physics
authors
Khomchenko, VA; Karpinsky, DV; Pereira, LCJ; Kholkin, AL; Paixao, JA
our authors
Andrei Kholkin
Retired Researcher
Dzmitry Karpinski (Karpinsky)
Post-doc Fellowshipacknowledgements
This work was supported by funds from FEDER (Programa Operacional Factores de Competitividade COMPETE) and from FCT-Fundacao para a Ciencia e a Tecnologia under the project PEst-C/FIS/UI0036/2011, program