Synthesis of NaLnNbC (Ln=La, Nd, Sm, Gd) an their structures and electrical properties

Wataru Sugimolo, Masahiro Nailo, Yoshiyuki Sugahara, Kazuyuki Kuroda

Research output: Contribution to journalArticle

Abstract

Polycrystalline samples of NaiLnbO (Ln=La, Nd, Sm, Gd) were synthesized by solid-state reactions. Reduced niobates were obtained as single-phase perovskites for x=0.05 and 0.1 when Ln=La and Nd and x=0.05 when Ln=Sm. The Gd-substituted samples could not be prepared under the synthetic conditions studied. Compositional analysis of the products revealed a slight amount of sodium loss during synthesis. The structural parameters obtained from Rietveld analysis revealed an increase in unit-cell volume. All of the obtained samples showed semiconducting behavior. Similar semiconducting behavior was observed for the same x value, suggesting the weak influence of the different Ln species to the electrical properties.

Original languageEnglish
Pages (from-to)267-272
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume547
Publication statusPublished - 1999 Dec 1

ASJC Scopus subject areas

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

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