Synthesis and characterization of the reduced niobates CaLnNb2O7, Ln = La-Pr, Sm, Gd-Lu, with the pyrochlore-type structure

S. Ya Istomin, O. G. D'Yachenko, E. V. Antipov, G. Svensson, B. Lundqvist

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

New reduced niobates, CaLnNb2O7, Ln = La-Pr, Sm, Gd-Lu, with the pyrochlore-type structure were synthesized in sealed Nb ampoules at 1350-1500°C for 6-10 h. The prepared compounds were characterized by powder X-ray diffraction, energy dispersive X-ray analysis, and thermogravimetric analysis. The magnetic measurements showed that all of the samples except the La, Sm, and Lu compounds exhibited Curie-Weiss behavior. The compounds were found to be electrically insulating.

Original languageEnglish
Pages (from-to)1251-1256
Number of pages6
JournalMaterials Research Bulletin
Volume33
Issue number8
DOIs
Publication statusPublished - 1998
Externally publishedYes

Keywords

  • A. inorganic compounds
  • B. chemical synthesis
  • C. X-ray diffraction
  • D. electrical properties
  • D. magnetic properties

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