ПросмотрВыпуск 2021 года по теме "crystals"

Отображаемые элементы 1-4 из 4

    • Energy transfer of intrinsic electronic excitation to impurities in the CaSO4 − Mn crystal 

      Nurakhmetov, T.N.; Salikhodzha, Zh.M.; Zhangylyssov, K.B.; Zhunusbekov, A.M.; Kainarbay, A.Zh.; Daurenbekov, D.H.; Azmagambetova, Zh.; Sadykova, B.M.; Yussupbekova, B.N.; Alibay, T.T.; Tolekov, D.A.; Tulebayeva, N. (2021)
      The nature of the impurity emission center and the energy transfer mechanisms from intrinsic electronic excitations to the Mn2+ impurity centers in the CaSO4 − Mn crystal have been investigated. The methods of vacuum ultraviolet, atomic absorption and luminescence spectroscopy are used in a wide temperature range from 5 K to 300 K. The energy transfer of intrinsic electronic ...
      2023-12-05

    • Intrinsic emission and electron-hole trapping centers in crystals Li2SO4 -Cu 

      Nurakhmetov, T.N.; Salikhodzha, Zh.M.; Dolomatov, M.Y.; Yussupbekova, B.N.; Zhunusbekov, A.M.; Kainarbay, A.Zh.; Daurenbekov, D.H.; Sadykova, B.M.; Zhangylyssov, K.B.; Alibay, T.T.; Tolekov, D.A. (2021)
      In the present work, the emission and excitation spectra in Li2SO4-Cu crystals have been obtained by the methods of vacuum-ultraviolet and thermoactivation spectroscopy. We have studied the nature of emission from a pressed and annealed sample of Li2SO4-Cu powders. It has been revealed that at low temperatures Cu0-SO−4-centers are formed during the trap of electrons by Cu+ ...
      2023-12-05

    • Mechanisms for the creation of intrinsic electron-hole trapping centers in a CaSO4 crystall 

      Nurakhmetov, T.N.; Zhangylyssov, K.B.; Zhunusbekov, A.M.; Daurenbekov, D.H.; Alibay, T.T.; Sadykova, B.M.; Yussupbekova, B.N.; Tolekov, D.A. (2021)
      The mechanism of creation of electron-hole trapping centers in CaSO4 at 15-300 K was investigated by the methods of vacuum-ultraviolet and thermoactivation spectroscopy. It is shown that electron-hole trapping centers are formed upon trap of electrons in the anionic complexes SO2− 4 and localization of holes in the form of SO−4 radical. Based on the measurement of the spectrum ...
      2023-12-05

    • Mechanisms formation of electron-hole trap centers in LiKSO4 crystall 

      Nurakhmetov, T.N.; Salikhodzha, Zh.M.; Zhunusbekov, A.M.; Kainarbay, A.Zh.; Daurenbekov, D.H.; Alibay, T.T.; Sadykova, B.M.; Zhangylyssov, K.B.; Yussupbekova, B.N.; Tolekov, D.A. (2021)
      The mechanisms of creation of electron-hole trapping centers in LiKSO4 have been investigated by the methods of vacuum and thermal activation spectroscopy. It is shown that electron-hole trapping centers are formed during the trapping of electrons by anionic complexes and localization of a hole in the lattice in the form of the radical SO−4. The appearance of phosphorescence at ...
      2023-12-05