Skip to content

Research at St Andrews

Evolution of conductivity, structure and thermochemical stability of lanthanum manganese iron nickelate perovskites

Research output: Contribution to journalArticle

DOI

Author(s)

School/Research organisations

Abstract

A series of solid solutions in the La0.8Sr0.2MnO3 +/-delta (LSM)-xLa(0.95)Ni(0.6)Fe(0.4)O(3-delta) (LNF) system were synthesised by solid-state reaction to investigate the effect of Ni/Fe substitution for Mn on their DC electrical conductivity, structure and thermochemical stability. A non-linear change in structure, conductivity, magnetic properties and thermochemical stability of solid solutions was observed with the increase in the Ni/Fe content. A new phase (100 - x) LSM center dot xLNF with orthorhombic symmetry was found in the concentration range 35 <= x < 70 mol%, and exhibits the lowest value of the conductivity and the highest activation energy in the single-phase concentration range 43 <= x <= 53. This is, most probably, caused by a low concentration of Mn3+-O-Mn4+ units available for small polaron motion through the B sublattice. The compositions containing more than 50 mol% Ni in the B sublattice shows metallic-like conductivity behaviour. The temperature of the semiconducting metallic transition decreases with increase in the Ni concentration. All compositions had good thermochemical stability in air, in contrast to that under reducing conditions. The higher the Ni/Fe content in the sample, the faster the reduction of the solid solutions occurred in non-humidified Ar-H-2 (95 : 5) atmosphere. The overall oxygen stoichiometry of the solid solutions is discussed.

Close

Details

Original languageEnglish
Pages (from-to)5147-5154
Number of pages8
JournalJournal of Materials Chemistry
Volume18
Issue number42
Early online date23 Sep 2008
DOIs
Publication statusPublished - 2008

    Research areas

  • ELECTRICAL-CONDUCTIVITY, CATHODE MATERIAL, STRUCTURE REFINEMENT, TRANSPORT-PROPERTIES, CRYSTAL-STRUCTURE, OXIDES, PHASE, NI, STOICHIOMETRY, LANI1-XCOXO3

Discover related content
Find related publications, people, projects and more using interactive charts.

View graph of relations

Related by author

  1. An FeNbO4-based oxide anode for a solid oxide fuel cell (SOFC)

    Liu, X., Xie, D., Irvine, J. T. S., Ni, J. & Ni, C., 11 Jan 2020, In : Electrochimica Acta. In press, 135692.

    Research output: Contribution to journalArticle

  2. A B-site doped perovskite ferrate for efficient anode of a solid oxide fuel cell with in situ metal exsolution

    Ni, C., Zeng, Q., He, D., Peng, L., Xie, D., Irvine, J. T. S., Duan, S. & Ni, J., 21 Dec 2019, In : Journal of Materials Chemistry A. 7, 47, p. 26944-26953 10 p.

    Research output: Contribution to journalArticle

  3. Lattice strain-enhanced exsolution of nanoparticles in thin films

    Han, H., Park, J., Nam, S. Y., Choi, G. M., Parkin, S. S. P., Jang, H. M. & Irvine, J. T. S., 1 Dec 2019, In : Nature Communications. 10, 8 p., 1471.

    Research output: Contribution to journalArticle

  4. Hexagonal perovskite related oxide ion conductor Ba3NbMoO8.5: phase transition, temperature evolution of the local structure and properties

    Chambers, M. S., McCombie, K. S., Auckett, J. E., McLaughlin, A. C., Irvine, J. T. S., Chater, P. A., Evans, J. S. O. & Evans, I. R., 28 Nov 2019, In : Journal of Materials Chemistry. 7, 44, p. 25503-25510 8 p.

    Research output: Contribution to journalArticle

  5. Oxygen storage capacity and thermal stability of brownmillerite-type Ca2(Al1-xGax)MnO5+δ oxides

    Huang, X., Ni, C. & Irvine, J. T. S., 25 Nov 2019, In : Journal of Alloys and Compounds. 810, 151865.

    Research output: Contribution to journalArticle

Related by journal

  1. Hexagonal perovskite related oxide ion conductor Ba3NbMoO8.5: phase transition, temperature evolution of the local structure and properties

    Chambers, M. S., McCombie, K. S., Auckett, J. E., McLaughlin, A. C., Irvine, J. T. S., Chater, P. A., Evans, J. S. O. & Evans, I. R., 28 Nov 2019, In : Journal of Materials Chemistry. 7, 44, p. 25503-25510 8 p.

    Research output: Contribution to journalArticle

  2. Magneto-structural correlations of novel kagomé-type metal organic frameworks

    H. Mohideen, M. I., Lei, C., Tuček, J., Malina, O., Brivio, F., Kasneryk, V., Huang, Z., Mazur, M., Zou, X., Nachtigall, P., Čejka, J. & Morris, R. E., 14 Jun 2019, In : Journal of Materials Chemistry. 7, 22, p. 6692-6697 6 p.

    Research output: Contribution to journalArticle

  3. Revealing resonance effects and intramolecular dipole interactions in the positional isomers of benzonitrile-core thermally activated delayed fluorescence materials

    Kukhta, N. A., Higginbotham, H. F., Matulaitis, T., Danos, A., Bismillah, A. N., Haase, N., Etherington, M. K., Yufit, D. S., McGonigal, P. R., Gražulevičius, J. V. & Monkman, A. P., 14 Aug 2019, In : Journal of Materials Chemistry. 7, 30, p. 9184-9194 11 p.

    Research output: Contribution to journalArticle

  4. STA-27, a porous Lewis acidic scandium MOF with an unexpected topology type prepared with 2,3,5,6-tetrakis(4-carboxyphenyl)pyrazine

    Prasad, R., Seidner, S., Cordes, D. B., Lozinska, M., Dawson, D., Thompson, M., Düren, T., Chakarova, K., Mihaylov, M., Hadjiivanov, K., Hoffmann, F., Slawin, A. M. Z., Ashbrook, S. E., Clarke, M. & Wright, P., 14 Mar 2019, In : Journal of Materials Chemistry. 7, 10, p. 5685-5701

    Research output: Contribution to journalArticle

Related by journal

  1. Journal of Materials Chemistry (Journal)

    Finlay Morrison (Reviewer)
    2008 → …

    Activity: Publication peer-review and editorial work typesPeer review of manuscripts

  2. Journal of Materials Chemistry (Journal)

    John Thomas Sirr Irvine (Member of editorial board)
    2007 → …

    Activity: Publication peer-review and editorial work typesEditor of research journal

ID: 429133

Top