Thermochromic Effect in Doped Bi12SiO20 Crystals |
| A.O. Diachenko and T.V. Panchenko
Department of Physics, Electronics and Computer Science, Oles Honchar Dnipro National University, 72 Gagarin Av., 49010, Dnipro, Ukraine |
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| Optical-temperature investigations of stationary and photo-induced absorption in undoped and Al (or Ga) doped Bi12SiO20 crystals are discussed. In the wave-number range 22000-4000 cm-1 under temperatures from 80 to 650 K, peculiarities of thermochromic effect have been revealed and temperature dependences of intensity of bands forming photo- and thermochromic effects have been found. A correlation between these dependences and spectra of thermostimulated current is explained. |
DOI: 10.12693/APhysPolA.133.910 PACS numbers: 42.65.Hw, 42.70.Nq, 78.20.Ci, 78.20.nb, 78.40.Fy, 78.40.Ha |