Electrical conductivity and structure of solid solutions formed in the La0.8Sr0.2MnO3-La0.95Ni0.6Fe0.4O3 system

Elena Konysheva, John T.S. Irvine, Astrid Besmehn

Research output: Journal PublicationArticlepeer-review

13 Citations (Scopus)

Abstract

The transport properties and structure of the solid solutions formed in the (100 - x) La0.8Sr0.2MnO3 (LSM)-x La0.95Ni0.6Fe0.4O3 (LNF) system were studied for the first time. The parent LSM and LNF perovskites and the solid solutions formed in the concentration ranges x < 30 and 70 ≤ x ≤ 100 exhibited a rhombohedral structure. The unit cell volume of these solid solutions decreases with increasing LNF content. Formation of a new phase with an orthorhombic symmetry was observed in the concentration range 35 ≤ x< 70. Lower transport properties of the (100 - x)LSM-xLNF, 43 ≤ x ≤ 53, compositions as compared to the parent LSM and LNF perovskites can be explained with the formation of a new phase with orthorhombic structure. The (100 - x)LSM-xLNF single phase perovskites possess metallic type of conductivity in a narrow concentration and temperature range.

Original languageEnglish
Pages (from-to)1432-1435
Number of pages4
JournalSolid State Ionics
Volume179
Issue number27-32
DOIs
Publication statusPublished - 30 Sep 2008
Externally publishedYes

Keywords

  • Electrical conductivity
  • Perovskites
  • Semiconducting-metallic transition
  • Solid oxide fuel cell

ASJC Scopus subject areas

  • Chemistry (all)
  • Materials Science (all)
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Electrical conductivity and structure of solid solutions formed in the La0.8Sr0.2MnO3-La0.95Ni0.6Fe0.4O3 system'. Together they form a unique fingerprint.

Cite this