Dielectric and mossbauer studies of Pb(Fe1/2Ta1/2)O3 multiferroic ceramics sintered from mechanoactivated powders

A. A. Gusev, S. I. Raevskaya, V. V. Titov, E. G. Avvakumov, V. P. Isupov, I. P. Raevski*, Haydn Chen, C. C. Chou, S. P. Kubrin, S. V. Titov, M. A. Malitskaya, A. V. Blazhevich, D. A. Sarychev, V. V. Stashenko, S. I. Shevtsova

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


The effect of high-energy mechanical activation on dielectric and magnetic properties of PbFe1/2Ta1/2O3 (PFT) multiferroic was studied. Mössbauer studies have shown that the Neel temperature TN of the antiferromagnetic phase transition in PFT powders can be changed substantially by mechanical activation and subsequent annealing. The increase of TN by more than 70 K, as compared to PFT single crystal, was achieved in the mechanically activated PFT powder annealed at 700°C. Dielectric studies have shown that in contrast to ceramics obtained by usual sintering, PFT ceramics fabricated by sintering of the mechanoactivated powder does not show the relaxor-like behavior.

Original languageEnglish
Pages (from-to)41-51
Number of pages11
Issue number1
StatePublished - 25 Jan 2015


  • Lead iron tantalate
  • Mössbauer Fe spectra
  • dielectric permittivity
  • mechanical activation
  • phase transition

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