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It has been reported that erbium (Er) is a source of optical emission at λ=1.54 pm due to 4I13/2 →4I15/2 transition of Er3+. A method of oxygen (O) codoping with Er has attracted attention as a candidate for obtaining more efficient optical gain by forming Er:O complex. Although several simulations predict the equilibrium structure of Er:O complex, it is difficult to understand experimentally how...
In this study, we fabricated in-plane thermoelectric micro-generators (4 mm times 4 mm) based on bismuth telluride thin films by using flash evaporation method. The thermoelectric properties of as-grown thin films are lower than those of bulk materials. Therefore the as-grown thin films were annealed in hydrogen at atmospheric pressure for 1 hour in a temperature range of 200 degC. to 400degC. By...
The properties of MnBiAl films prepared by alternately depositing, using vacuum evaporation, Mn and Bi layers with a single Al layer at the center, were studied. On annealing at temperatures between 230 and 420??C, films with Mn contents between 40 and 70 at% and with an Al content below 15 at% became ferromagnetic, with the magnetization perpendicular to the film plane. Adding Al caused the size...
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