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The present paper reports the conductivity enhancement of strontium titanate (SrTiO3) using grain boundary engineering (GBE). In grain boundaries (GBs), Σ3 GBs have superior electrical properties to general GBs. Although many studies have focused on increasing the population of Σ3 GBs, the increase in the Σ3 GB population was limited mainly because the previous studies did not provide an efficient...
Pink chromium-doped alumina, Al1.95Cr0.05O3, was prepared by microwave assisted combustion synthesis, starting from a stoichiometric mixture of Al(NO3)3·9H2O, Cr(NO3)3·9H2O and urea. No additional annealing was required, as the X-ray diffraction pattern of the sample indicated that Al1.95Cr0.05O3 was the single crystalline phase, having an average crystallite size of 63nm. The resulted powder had...
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