Synthesis and characterisation of reduced niobates [Sr1-xLnxNb2O6, Ln = La, Nd]

S. Ya Istomin, O. G. D'yachenko, E. V. Antipov, G. Svensson, M. Nygren

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Sr1-xLnxNb2O6, Ln = La (x ≤ 0.4), Nd (x ≤ 0.3) solid solutions with a CaTa2O6-type structure have been studied. No superconductivity was found in the prepared samples down to 5K. The CaTa2O6 type crystal structure of Sr0.6La0.4Nb2O6 was refined from X-ray powder diffraction data: Ri=0.054, Rp=0.117. The oxidation process of the lanthanum-containing compounds was studied. A drastical decrease of the lanthanum content, accompanied by the formation of the cation vacancies at the Sr/La site occurs during oxidation.

Original languageEnglish
Pages (from-to)743-749
Number of pages7
JournalMaterials Research Bulletin
Volume29
Issue number7
DOIs
Publication statusPublished - Jul 1994
Externally publishedYes

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