Title

Far-infrared evidence for glass-like properties exhibited by crystals of CaF2 doped with YF3

Abstract

Low temperature far-infrared transmission measurements between 3 cm-1 and 18 cm-1 have been performed on crystals of CaF2 doped with YF3 for molar concentrations ranging from 1% to 22%. These single crystal materials posses a broad distribution of two-level systems typical of amorphous materials. The distribution is similar in magnitude and frequency dependence to that of a standard soda-lime silica glass. In contrast to other fluorite mixed crystal systems the magnitude of the two-level system distribution for YF3 doped samples can be reversibly altered by high temperature cycling between 600 and 900 C.

Publisher

Elsevier

Publication Date

8-1-1996

Publication Title

Journal of Non-Crystalline Solids

Department

Physics and Astronomy

Document Type

Article

DOI

10.1016/0022-3093(96)00348-1

Language

English

Format

text

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