Magneto-optical properties of high-purity zinc-tellurite glasses.

High-purity TeO 2 –ZnO, TeO 2 –ZnO–Na 2 O and TeO 2 –ZnO–La 2 O 3 –Na 2 O glasses have been characterized in terms of material applicability for magneto-optical devices. Glasses with extremely low content of absorbing impurities of 3d-transition metals and hydroxyl groups have been prepared inside a sealed silica glass chamber in a flow of purified oxygen. Magneto-optical properties, including spectral dependence of the Verdet constant in the 450–1561 nm range and magnetic figure of merit, crystallization stability and optical properties in the IR range were studied. [ABSTRACT FROM AUTHOR]