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NaNbO3 (NN)-based lead-free antiferroelectric (AFE) ceramics with ultrahigh energy-storage density (Wrec) have attracted increasing attention for applications in high power electronic devices. However, large polarization hysteresis induced by the AFE-ferroelectric (FE) phase transition tends to cause high energy dissipation. In this work, a relaxor AFE orthorhombic R-phase ceramic in (1-x)NN-xCaTiO3 ((1-x)NN-xCT) solid solutions was found to show outstanding comprehensive energy-storage properties with giant Wrec = 6.6 J/cm3, high energy efficiency η = 80% and ultrahigh power density PD = 350...

DCSTEM recognizes Kattoum, Ruhl-Whittle, Agarwal as Faculty Excellence Winners No Comments The UA Little Rock Donaghey College of Science, Technology, Engineering and Mathematics (STEM) has selected its 2021 Faculty Excellence winners. “The committee would like to extend our deepest congratulations to the three DCSTEM Faculty Excellence Winners,” said Dr. Rene Shroat-Lewis, chair of the awards selection committee. “We were humbled reading each nominee packet that clearly showed their dedication and persistence in their respective category. This is certainly a reflection of not only har...