The effect of quenching on semiconductive properties and magnetic phase transition temperature of multiferroic Pb(Fe1/2Nb1/2)O3 ceramics

S. I. Raevskaya, S. P. Kubrin, I. P. Raevski*, C. C. Chou, Haydn Chen, V. V. Titov, M. A. Malitskaya, D. A. Sarychev, I. N. Zakharchenko

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Neel temperature of Pb(Fe1/2Nb1/2)O3 ceramics sintered at 1120°C and quenched to room temperature was revealed to be 25 K higher than that of the same ceramics slowly cooled at a rate of 50 K/h. A small singlet component, typical for compositionally ordered perovskites, is present in the room-temperature Mossbauer spectrum of the slowly cooled sample. It proves that the quenched sample is more compositionally disordered than the slowly-cooled one. Substantially higher room-temperature resistivity values and positive temperature coefficient of resistivity of the slowly cooled sample are attributed to the formation of the grain-boundary potential barriers due to oxidation during slow cooling.

Original languageEnglish
Pages (from-to)64-73
Number of pages10
JournalFerroelectrics
Volume509
Issue number1
DOIs
StatePublished - 12 Mar 2017

Keywords

  • Compositional ordering
  • Mossbauer spectra
  • Neel temperature
  • PFN
  • PTCR
  • lead iron niobate
  • resistivity

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    Raevskaya, S. I., Kubrin, S. P., Raevski, I. P., Chou, C. C., Chen, H., Titov, V. V., Malitskaya, M. A., Sarychev, D. A., & Zakharchenko, I. N. (2017). The effect of quenching on semiconductive properties and magnetic phase transition temperature of multiferroic Pb(Fe1/2Nb1/2)O3 ceramics. Ferroelectrics, 509(1), 64-73. https://doi.org/10.1080/00150193.2017.1293452