ACTIVATION ENERGY OF VARIOUS STRUCTURAL DEFECTS IN PURE AND ERF3 DOPED CAF2
Pages 9-13
Marius Stef, M. Munteanu, N. Pecingina-Girjoaba, I. Nicoara
Abstract
Pure and Erbium-doped calcium fluoride crystals have been grown using the vertical Bridgman method. The real and imaginary parts of the complex dielectric constant have been measured at five audio-frequencies over the temperature range 150-300 K. From the observed relaxation processes the activation energy for various structural defects has been determined.