Ultra low thermal expansion phases: Substituted 'PMN' perovskites

Dinesh K. Agrawal, R. Roy, H. A. McKinstry

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22 Scopus citations

Abstract

Among different principles which can be utilized in a structure to exhibit anomalously low thermal expansion, a 'distributed' phase transition is a candidate. Pb(Mg 1 3Nb 2 3)3 is a well known relaxor ferroelectric material in which such a transition occurs. The change in thermal expansion of PMN ceramics caused by partially substituting various ions at the B-site has been studied in order to see any new low expansion materials with good electrostriction properties exist. Partial ionic substitution of Ni2+, Co2+, Zn2+, Mn2+, Cd2+, Fe3+, Sc3+, Ti4+, Sn4+, Hf4+, Zr4+, and W6+ was made at B-site. The sintering temperature was kept at 1250° for 1 hour. Thermal expansion data and their interpretations are presented.

Original languageEnglish (US)
Pages (from-to)83-88
Number of pages6
JournalMaterials Research Bulletin
Volume22
Issue number1
DOIs
StatePublished - Jan 1987

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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