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Processing and characterization of (1-x)(Na1/2)TiO3 - XLa(Mg1/2Ti1/2)O3 ceramics

  • A. N. Salak*
  • , N. P. Vyshatko
  • , A. L. Kholkin
  • , V. M. Ferreira
  • , N. M. Olekhnovich
  • , Yu V. Radyush
  • , A. V. Pushkarev
  • *Corresponding author for this work
  • University of Aveiro
  • Belarus Academy of Sciences

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

11 Citations (Scopus)

Abstract

Lead-free relaxor ceramics based on sodium-bismuth titanate, (1-x)(Na 1/2Bi1/2)TiO3 -xLa(Mg1/2Ti 1/2)O3 [(1-x)NBT-xLMT] (0≤2c≤0.25), were prepared by both the conventional mixed oxide method and by the Pechini route, and their crystal structure and dielectric properties were investigated. All the compositions studied were found to possess a rhombohedrally distorted crystal lattice at room temperature. A distortion degree of the unit cell decreases and its volume increases with LMT content. The temperature of the dielectric permittivity maximum does not change with increasing substitution rate. As x is increased, the frequency-dependent dielectric peaks are flattened. The compositional evolution of structure and dielectric characteristics of the ceramics obtained are analysed and discussed in respect to size, charge and polarizability of the cations involved.

Original languageEnglish
Title of host publicationAdvanced Materials Forum III - Proceedings of the 3rd International Materials Symposium 2005 and 12th Encontro da Sociedade Portuguesa de Materiais - SPM
PublisherTrans Tech Publications Ltd
Pages250-254
Number of pages5
EditionPART 1
ISBN (Print)9780878494026
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event3rd International Materials Symposium and 12th Portuguese Materials Society Meeting 2005 - Aveiro, Portugal
Duration: 20 Mar 200523 Mar 2005

Publication series

NameMaterials Science Forum
NumberPART 1
Volume514-516
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference3rd International Materials Symposium and 12th Portuguese Materials Society Meeting 2005
Country/TerritoryPortugal
CityAveiro
Period20/03/0523/03/05

Keywords

  • Lead-free
  • Perovskite
  • Relaxor
  • Sodium-bismuth titanate

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