Perovskite NdTiO3 in Sr- and Ca-doped BaO-Nd2O3-TiO2 Microwave Dielectric Ceramics

Rick Ubic, I. M. Reaney, W. E. Lee

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Ba 6-3x Nd 8+2x Ti 18 O 54 (BNT) is a useful dielectric resonator at microwave frequencies. Recent work has shown that the major secondary phase in this system can be indexed as Nd 4 Ti 9 O 24 (JCPDS 33-943). The present study has revealed that when half of the stoichiometric Ba +2 is replaced with Ca +2 or Sr +2 , a third, tilted perovskite-structured phase, NdTiO 3 , is also present. It forms as coherent intragranular regions within BNT grains and always contains some of the divalent dopant species. The orientational relationship between NdTiO 3 and BNT has been established.

Original languageAmerican English
Pages (from-to)1576-1580
Number of pages5
JournalJournal of Materials Research
Volume14
Issue number4
DOIs
StatePublished - Apr 1999

EGS Disciplines

  • Materials Science and Engineering

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