Mn doping-induced structural and magnetic transformations in the antiferroelectric phase of the Bi1-xNdxFeO3 perovskites

authors	Khomchenko, VA; Troyanchuk, IO; Maria, TMR; Karpinsky, DV; Das, S; Amaral, VS; Paixao, JA
nationality	International
journal	JOURNAL OF APPLIED PHYSICS
keywords	BISMUTH FERRITE; SUPEREXCHANGE INTERACTION; WEAK FERROMAGNETISM; TRANSITIONS; BIFEO3
abstract	X-ray diffraction, differential scanning calorimetry, and magnetization measurements of the Bi0.825Nd0.175Fe1-yMnyO3 (y <= 0.3) compounds were carried out to follow the effect of Mn doping on the crystal structure and magnetic properties of the intermediate antiferroelectric and weak ferromagnetic phase of the Bi1-xNdxFeO3 perovskites. Suppression of the antipolar displacements typical of the parent B-site undoped compound followed by stabilization of the GdFeO3-type structure as well as decrease of the antipolar-to-nonpolar transition temperature were found in this series with increasing Mn content. Compositional variation of the spontaneous magnetization in the Bi0.825Nd0.175Fe1-yMnyO3 (y <= 0.3) system was shown to have a temperature-dependent character. At room temperature, a close to linear decrease of the spontaneous magnetization takes place with increase of the Mn content. At low temperatures, enhancement of the magnetization is observed with increasing the dopant concentration. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4752277]
publisher	AMER INST PHYSICS
issn	0021-8979
year published	2012
volume	112
issue	6
digital object identifier (doi)	10.1063/1.4752277
web of science category	Physics, Applied
subject category	Physics
unique article identifier	WOS:000309423200103