Preparation and magnetic properties of TbF 3 containing oxide fluoride glasses

Abstract

New glasses containing TbF 3 have been prepared in a TbF 3–BaF 2–AlF 3–GeO 2 system. Their respective densities, refractive indexes, and glass transition temperatures are (5.42–6.07) × 10 3 kg m −3, 1.72–1.73, and 605.1–675.2 °C. Their magnetic susceptibilities are proportional to the contents of TbF 3 in glasses obtained in this study. The values agree with the calculated values. The Curie constant of the 40TbF 3–20BaF 2–10AlF 3–20GeO 2 glass is 5.13 K emu mol −1; its effective magnetic susceptibility is 9.96 μ B. The atomic percentage of Tb 3+ in the 40TbF 3–20BaF 2–10AlF 3–20GeO 2 glass is 11%, which is comparable to that of the oxide glass, which is reported as the material for Faraday components.