Advertisement

Inorganic Materials

, Volume 36, Issue 11, pp 1137–1140 | Cite as

Preparation of La2-x Sr x NiO4 (x = 0-1.3) conducting oxides via a citrate route

  • S. P. Tolochko
  • L. V. Makhnach
  • I. F. Kononyuk
  • V. V. Vashuk
  • V. A. Lomonosov
  • J. Hauck
  • H. Altenburg
  • V. M. Shelekhina
Article

Abstract

La2-x SrxNiO4 (x = 0-1.3) oxide materials were prepared by the citrate and ceramic routes. The citrate precursors and final products were characterized by thermal analysis (DTA + TG), x-ray diffraction, scanning electron microscopy, IR spectroscopy, and specific surface and conductivity measurements. The use of citrate mixtures leads to the formation of amorphous precursors to La2O3, NiO, and La2-xSrxNiO4 (x <-0.4); reduces the temperature required for obtaining solid solutions by 150–200‡C as compared to the ceramic route; and enables the preparation of fine powders (≤5 Μm) and dense ceramics.

Keywords

La2NiO4 Amorphous Precursor Citrate Precursor Ceramic Route Oxycarbonates 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Lazarev, V.B., Krasov, V.G., and Shaplygin, I.S.,Elektroprovodnost’ okisnykh sistem i plenochnykh Struktur (Electrical Conductivity of Oxide Systems and Film Structures), Moscow: Nauka, 1978.Google Scholar
  2. 2.
    Vysokotemperaturnye oksidnye provodniki dlya elektrokhimicheskikh ustroistv (High-Temperature Electronic Oxide Conductors for Electrochemical Applications), Pal’guev, S.F., Gil’derman, V.K., and Zemtsov, V.I., Eds., Moscow: Nauka, 1990.Google Scholar
  3. 3.
    Kakol, Z., Spatek, J., and Honig, J.M., Superconductivity and Antiferromagnetism in La2-xSrxNiO4,J. Solid State Chem., 1989, vol. 79, no. 2, pp. 288–292.CrossRefGoogle Scholar
  4. 4.
    Ivanov, V.A., High-Temperature Superconductivity in La2−xSrxNiO4,Zh. Neorg. Khim., 1989, vol. 34, no. 12, pp. 3201–3203.Google Scholar
  5. 5.
    Kononyuk, I.F., Surmach, N.G., and Makhnach, L.V., Preparation and Electrical Properties of La2-xSrxNiO4 (x = 0-1.0),Izv. Akad. Nauk SSSR, Neorg. Mater., 1982, vol. 18, no. 7, pp. 1222–1225.Google Scholar
  6. 6.
    Takeda, Y., Kanno, R., Sakano, M., and Yamamoto, O., Crystal Chemistry and Physical Properties of La2-xSrxNiO4 (0≤x ≤1.6),Mater. Res. BulI., 1990, vol. 25, no. 3, pp. 293–306.CrossRefGoogle Scholar
  7. 7.
    Makhnach, L.V., Tolochko, S.P., Kononyuk, LE,et al., Nonstoichiometry and Electrical Properties of La1-xSr1+xNiO4±Σ (0 ≤x ≤1) Solid Solutions,Neorg. Mater, 1993, vol. 29, no. 12, pp. 1678–1682 [Inorg. Mater. (Engl. Transi.), vol. 29, no. 12, pp. 1509–1513].Google Scholar
  8. 8.
    Anderton, D.J. and Sale, F.R., Production of Conducting Oxide Powders by Amorphous Citrate Process,Powder Metall., 1979, no. 1, pp. 14–21.Google Scholar
  9. 9.
    Tolochko, S.P., Kononyuk, I.F., Lyutsko, V.A.,et al., Comparison Study of the Thermal Decomposition of Y, Ba, and Cu Citrates and Coprecipitated Carbonates,Zh. Neorg. Khim., 1991, vol. 36, no. 2, pp. 492–497.Google Scholar
  10. 10.
    Soedineniya redkozemel’nykh elementov. Karbonaty, oksalaty, nitraty, titanaty (Compounds of Rare-Earth Elements: Carbonates, Oxalates, Nitrates, and Titanates), Komissarova, L.N.et al., Eds., Moscow: Nauka, 1984.Google Scholar
  11. 11.
    Khimicheskaya entsiklopediya (Chemical Encyclopedia), Zefirov, N.S.et al., Eds., Moscow: Bol’shaya Rossiiskaya Entsiklopediya, 1995, vol. 4, p. 443.Google Scholar
  12. 12.
    Singh, K.K. and Ganguly, P., Infrared Spectra of Some Oxides of K2NiF4 and Related Structures,Spectrochim. Acta, Part A, 1984, vol. 40, no. 6, pp. 539–545.CrossRefGoogle Scholar

Copyright information

© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • S. P. Tolochko
    • 1
  • L. V. Makhnach
    • 1
  • I. F. Kononyuk
    • 1
  • V. V. Vashuk
    • 1
  • V. A. Lomonosov
    • 1
  • J. Hauck
    • 2
  • H. Altenburg
    • 3
  • V. M. Shelekhina
    • 4
  1. 1.Institute of General and Inorganic ChemistryBelarussian Academy of SciencesMinskBelarus
  2. 2.Forschungszentrum JülichJülichGermany
  3. 3.Fachhochschule MunsterSteinfurtGermany
  4. 4.Research Institute of Powder MetallurgyMinskBelarus

Personalised recommendations