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Effects of the yield and quality of Zn were investigated by vacuum carbothermic reduction from zinc oxide ore. Results indicate that initial moles ratio of C/ZnTotal, pressure of system, reaction time affect significantly the Zn yield from zinc oxide ore, while sintering temperature and sintering time have important influences on the quality of Zn. The optimal operating conditions are obtained as...
Modulation of carrier density in graphene has been demonstrated on single-crystalline or polymer ferroelectrics as gating dielectric. However, its tuning from p-type to n-type in air at room temperature has not yet been reported. In this paper, such a tuning is realized on polycrystalline PbZr0.52Ti0.48O3 (PZT) ceramic under polarization field in the range of – 22.5kV/cm to 22.5kV/cm through the construction...
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