Terbium(III) oxide
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Terbium(III) oxide, also known as terbium sesquioxide, is a sesquioxide of the rare earth metal terbium, having chemical formula Template:Chem. It is a p-type semiconductor, which conducts protons, which is enhanced when doped with calcium.[1] It may be prepared by the reduction of [[Terbium(III,IV) oxide|Template:Chem]] in hydrogen at 1300 °C for 24 hours.[2]
It is a basic oxide and easily dissolved to dilute acids, and then almost colourless terbium salt is formed.
- Tb2O3 + 6 H+ → 2 Tb3+ + 3 H2O
The crystal structure is cubic and the lattice constant is a = 1057 pm.[3]
References
Template:Terbium compounds Template:Oxides
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- ↑ N. C. Baenzinger, H. A. Eick, H. S. Schuldt, L. Eyring: Terbium Oxides. III. X-Ray Diffraction Studies of Several Stable Phases. In: Journal of the American Chemical Society, 1961, 83, 10, S. 2219-23.