Terbium oxide films grown by chemical vapor deposition from terbium(III) dipivaloylmethanate

Terbium Ion Doping in Ca3Co4O9: A Step towards High-Performance Thermoelectric Materials

“…The Co 2p 3/2 and 2p 1/2 peaks for the undoped sample lies at 779.93 eV and 795.33 eV, respectively. In literature, it has been reported that for Co 3+ state, the 2p 3/2 and 2p 1/2 peaks occur at 779.6 eV and 794.8 eV, respectively, while for the Co 4+ state, the 2p 3/2 and 2p 1/2 peaks occurs at 781.4 eV and 796.8 eV, respectively3536. Since, observed binding energies lye in between the values expected for Co 3+ and Co 4+ , it is inferred that the Co in the sample exists in the mixed Co 3+ /Co 4+ valence state.…”

Flux growth at 1230 °C of cubic Tb2O3single crystals and characterization of their optical and magnetic properties

“…It is only recently that the growth of cubic Tb 2 O 3 polycristalline thin films was investigated for electronic or optronic applications. [6][7][8] The increasing interest for Tb 2 O 3 thin films is such that the availability of high quality rare earth sesquioxide substrates would certainly constitute an important progress. On the other hand, as soon as it became clear that cubic Tb 2 O 3 crystals could be made available, their use as Faraday rotators was patented.…”

From ScOOH to Sc2O3: Phase Control, Luminescent Properties, and Applications

“…The typical four XPS peaks of Tb 3+ at 145.23, 147.93, 150.83, and 154.63 eV in Tb 2 O 3 can be found accordingly in the XPS spectrum of Tb 4 O 7 at 146.03, 148.38, 151.03, and 153.83 eV, respectively. However, the peaks at 157.28 and 164.48 eV in Tb 4 O 7 , obviously originated from Tb 4+ , cannot be seen in Tb 2 O 3 , but they correspond very well with the XPS peaks at 157.0 and 164.0 eV in the annealed ScOOH:Tb, i.e., Sc 2 O 3 :Tb (Figure d). This straightforwardly suggests that the oxidation reaction from Tb 3+ to Tb 4+ has happened during the annealing process of ScOOH:Tb, which has made us believe that the partial oxidation of Tb 3+ and the corresponding microenvironmental changes after thermal annealing is responsible for the dramatically weakened luminescence emission of Tb 3+ .…”