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New phases in the barium-rich region of the BaO-BaCuO2 system

  • Proceedings of the International Symposium “Order, Disorder, and Properties of Oxides” (ODPO-11)
  • Published:
Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

The phase relations have been studied in the BaO-CuO x system in the range of 25.0–45.0 mol % CuO at P(O2) = 21 kPa by visual polythermal analysis (VPA), X-ray phase analysis (XPA), differential thermal analysis (DTA), thermogravimetric analysis (TGA), chemical analysis (CA), X-ray microprobe analysis (XMEA), and electron diffraction (ED), with simultaneous elemental analysis (EA) by a transmission electron microscope (TEM). A discrete deviation of the 2.10, 2.08, 2.04, 2.02 (Ba/Cu) compositions from stoichiometry in the known Ba2CuO3 + δ oxides is found. New oxides of the 2.00, l.75, 1.66, 1.15 (Ba/Cu) compositions are revealed and their unit-cell parameters are determined. The phase diagram of the BaO-CuO x system is constructed, whose structure is considered as the total projection of phase states of the system at T = f(x) in CuO x .

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Authors and Affiliations

  1. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, 142432, Russia

    L. A. Klinkova, N. V. Barkovskii & V. K. Fedotov

  2. Institute of Microelectronics Technology, Russian Academy of Sciences, Chernogolovka, 142432, Russia

    V. I. Nikolaichik

Authors
  1. L. A. Klinkova
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  2. V. I. Nikolaichik
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  3. N. V. Barkovskii
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  4. V. K. Fedotov
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Corresponding author

Correspondence to L. A. Klinkova.

Additional information

Original Russian Text © L.A. Klinkova, V.I. Nikolaichik, N.V. Barkovskii, V.K. Fedotov, 2009, published in Izvestiya Rossiiskoi Akademii Nauk. Seriya Fizicheskaya, 2009, Vol. 73, No. 8, pp. 1167–1169.

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Klinkova, L.A., Nikolaichik, V.I., Barkovskii, N.V. et al. New phases in the barium-rich region of the BaO-BaCuO2 system. Bull. Russ. Acad. Sci. Phys. 73, 1104–1106 (2009). https://doi.org/10.3103/S1062873809080243

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  • DOI: https://doi.org/10.3103/S1062873809080243

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