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Effect of diamagnetic A2+ substitution on the magnetic and ferroelectric properties of the Bi1-xAxFeO3 multiferroics

  • V. A. Khomchenko
  • , D. A. Kiselev
  • , J. M. Vieira
  • , Li Jian
  • , A. M.L. Lopes
  • , Y. G. Pogorelov
  • , J. P. Araujo
  • , A. L. Kholkin
  • University of Aveiro
  • University of Porto

Research output: Chapter in Book/Report/Conference proceedingConference paperResearchpeer-review

Abstract

Investigation of crystal structure, magnetic and local ferroelectric properties of the diamagnetically-substituted Bi1-xA xFeO3 (A= Ca, Sr, Pb, Ba; x= 0.2, 0.3) ceramic samples has been carried out. It has been shown that the solid solutions have a rhombohedrally distorted perovskite structure described by the space group R3c. Piezoresponse force microscopy data have revealed existence of the spontaneous ferroelectric polarization in the samples at room temperature. Magnetization measurements have shown that magnetic state of these compounds is determined by the ionic radius of the substituting elements. A-site substitution with the biggest ionic radius ions has been found to suppress the spiral spin structure of BiFeO3 and to result in the appearance of weak ferromagnetism. The magnetic properties have been discussed in terms of the substitution- induced changes of the magnetic anisotropy.

Original languageEnglish
Title of host publicationFerroelectrics, Multiferroics, and Magnetoelectrics
Pages214-219
Number of pages6
Publication statusPublished - 2008
Externally publishedYes
Event2007 MRS Fall Meeting - Boston, MA, United States
Duration: 26 Nov 200730 Nov 2007

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1034
ISSN (Print)0272-9172

Conference

Conference2007 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA
Period26/11/0730/11/07

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