Просмотр по автору "Yakshibaev, R.A."

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    • Effect of lithium doping on electrophysical and diffusion proper-ties of nonstoichiometric superionic copper selenide Cu1.75 Se 

      Balapanov, M.Kh.; Kuterbekov, K.A.; Kubenova, M.M.; Ishembetov, R.Kh.; Akhmetgaliev, B.M.; Yakshibaev, R.A. (Eurasian Journal of Physics and Functional Materials, 2017)
      The results of studies of the ionic conductivity and the conjugated chemical diffusion coefficients (CCDC) in the nonstoichiometric LixCu1.75Se (0 ≤ x ≤ 0.25) ternary alloys are presented. It has been observed that the values of the ionic conductivity of Cu1.75Se copper selenide decreases with lithium doping in general owing to increasing the the activation energy. The increasing ...
      2023-12-04

    • Phase analysis, thermal and thermoelectric properties of nanocrystalline Na0.15Cu1.85S, Na0.17Cu1.80S, Na0.20Cu1.77S alloys 

      Balapanov, M.Kh.; Kubenova, M.M.; Kuterbekov, K.A.; Kozlovskiy, A.; Nurakov, S.N.; Ishembetov, R.Kh.; Yakshibaev, R.A. (2018)
      Synthesis, X-ray phase analysis, electron microscopy and investigations of the thermoelectric and thermal properties of nanocrystalline copper sulfide alloys contained sodium are presented. At room temperature, the alloys are a mixture of three phases of copper sulfide - the monoclinic phase of Na2Cu4S3 , the hexagonal phase of Cu2S and the cubic phase of Cu9S5 (digenite). The ...
      2023-12-04

    • Synthesis, X-ray phase analysis and differential thermal analysis of nanocrystalline superionic KxCu1.85S (x<0.05) copper sulfides 

      Sakhabayeva, S.M.; Balapanov, M.Kh.; Kuterbekov, K.A.; Ishembetov, R.Kh.; Kubenova, M.M.; Giniyatova, Sh.G.; Nurkenov, S.A.; Akhmetgaliev, B.M.; Zeleev, M.Kh.; Yakshibaev, R.A.; Seisenbayeva, G.S. (Eurasian Journal of Physics and Functional Materials, 2022)
      Superionic semiconductor chalcogenides with mixed electronic-ionic conductivity have very low lattice thermal conductivity and are excellent thermoelectrics. Doping with other elements is one of the methods for optimizing the useful properties of a material. In this work, nanosized polycrystalline alloys of nonstoichiometric Cu1.85S copper sulfide with a low content of potassium ...
      2025-01-27

    • Synthesis, X-ray phase analysis and differential thermal analysis of nanocrystalline superionic KxCu1.85S (x<0.05) copper sulfides 

      Sakhabayeva, S.M.; Balapanov, M.Kh.; Kuterbekov, K.A.; Ishembetov, R.Kh.; Kubenova, M.M.; Giniyatova, Sh.G.; Nurkenov, S.A.; Akhmetgaliev, B.M.; Zeleev, M.Kh.; Yakshibaev, R.A.; Seisenbayeva, G.S. (2022)
      Superionic semiconductor chalcogenides with mixed electronic-ionic conductivity have very low lattice thermal conductivity and are excellent thermoelectrics. Doping with other elements is one of the methods for optimizing the useful properties of a material. In this work, nanosized polycrystalline alloys of nonstoichiometric Cu1.85S copper sulfide with a low content of potassium ...
      2023-12-06