M. Kh. Ashurov, I. Nuritdinov, S. T. Boyboboeva, “Radiation-stimulated transformations Yb$^{3+}$ $\to$ Yb$^{2+}$ and Yb$^{3+}$ $\to$ Yb$^{3+}$ in single crystals and nanoceramics CaF$_2$ : YbF$_3$”, Fizika Tverdogo Tela, 2022, Volume 64, Issue 10,Page 1467

Dielectrics

Radiation-stimulated transformations Yb$^{3+}$ $\to$ Yb$^{2+}$ and Yb$^{3+}$ $\to$ Yb$^{3+}$ in single crystals and nanoceramics CaF$_2$ : YbF$_3$

M. Kh. Ashurov^a, I. Nuritdinov^b, S. T. Boyboboeva^bc

^a Fonon Research and Production Association, Tashkent, 700054 Uzbekistan
^b Institute of Nuclear Physics of the Academy of Sciences of the Republic of Uzbekistan, Tashkent, 1000214 Uzbekistan
^c Tashkent Regional Chirchik State Pedagogical Institute, 111700 Uzbekistan

Abstract: The radiation resistance of CaF$_2$ : YbF$_3$ (3 mol.% YbF$_3$) laser ceramics and a single crystal of similar composition (3.6 mol.% YbF$_3$) exposed to gamma rays in a $^{60}$Co source is studied. The non-irradiated samples have been shown to be similar in spectral characteristics. After the CaF$_2$ : YbF$_3$ crystals and ceramics $\gamma$-irradiation and the following time exposure, along with transformations Yb$^{3+}$ $\to$ Yb$^{2+}$, configurational Yb$^{3+}$ $\to$ Yb$^{3+}$ transitions between different states of Yb$^{3+}$ ions in the structure of samples are carried out, with the participation of interstitial $F_i$ ions.

Keywords: radiation resistance, laser ceramics, gamma rays, spectral characteristics defects.

Received: 13.05.2022
Revised: 13.05.2022
Accepted: 23.05.2022

Language: English