Thulium Oxide (Tm2O3) Powder
Thulium oxide (Tm2O3) powder has a greenish-white appearance. This rare earth sesquioxide has a cubic structure. The melting point of this material is approximately 2341°C. Tm2O3 is insoluble in water while it is slightly soluble in acidic environments. Tm2O3 has currently been receiving much attention because of its potential in the catalytic, electronic, optical and electrochemical applications. Tm2O3 has a high dielectric constant of 12–13 and its energy band gap of 5 eV. These interesting properties have attracted attention in gate dielectric oxide applications or an interfacial layer to suppress the EOT growth during heat treatments. Other application areas of Tm2O3 are; pH-sensing membranes using its high-k property, reversible absorption and desorption of hydrogen in NaAlH4 due to its catalytic activity, electrochemical sensors, ceramics, fuel cells, X-ray equipment, active agents of phosphors, control materials of atomic reactors, luminescent materials, lasers, and medical applications.