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Interaction between Cr2Se3 and Cu2GeSe3

  • Physicochemical Analysis of Inorganic Systems
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Abstract

The interaction along the Cu2GeSe3-Cr2Se3 join has been investigated using differential thermal and X-ray powder diffraction analyses. It has been found that the join is quasi-binary with a degenerate eutectic based on the Cu2GeSe3 compound. Two new quaternary compounds have been found along the join, namely, Cu2GeCr6Se12 and the γ phase. The phase is formed at 915°C by the peritectic reaction L + β-Cr2Se3 = γ and has the primary crystallization region up to 9 mol % Cr2Se3 in the temperature range 758–915°C. The room-temperature homogeneity range of the γ phase is 65–70 mol % Cr2Se3. The Cu2GeCr6Se12 compound is formed by the peritectoid reaction γ + β-Cr2Se3=Cu2GeCr6Se12 at 880°C, and its homogeneity range is 73–79 mol %. The X-ray reflections of the γ phase are indexed for the tetragonal crystal system with the unit cell parameters a = 12.043 Å and c = 9.180 Å. Samples with ferromagnetic properties are found in the homogeneity regions of both compounds.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia

    G. G. Shabunina, E. V. Busheva & T. G. Aminov

Authors
  1. G. G. Shabunina
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  2. E. V. Busheva
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  3. T. G. Aminov
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Shabunina, G.G., Busheva, E.V. & Aminov, T.G. Interaction between Cr2Se3 and Cu2GeSe3 . Russ. J. Inorg. Chem. 51, 126–130 (2006). https://doi.org/10.1134/S0036023606010207

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  • DOI: https://doi.org/10.1134/S0036023606010207

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