Category: Articles / Presentations

Machine learning of octahedral tilting in oxide perovskites by symbolic classification with compressed sensing
August 21, 2020The steady growth of online materials databases, coupled with efforts in materials informatics, has invited the reexamination of existing empirical models through the lens of modern machine learning techniques. Inspired by recent efforts to improve on the Goldschmidt tolerance factor for perovskite formation, we apply the symbolic regression to the problem of predicting octahedral tilting. […]
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Resistive switching in atomic layer deposited HfO2/ZrO2 nanolayer stacks
August 21, 2020The resistive switching properties of HfO2/ZrO2 nanolayers with the total thickness of 16 nm prepared using atomic layer deposition (ALD) were investigated. Current-voltage behavior, pulse time mode measurement, retention and endurance tests were carried out to characterize the memristive (memory-resistive) properties. Resistive switching was observed in all nanolayer stacks, and the set voltage (Vset) decreased with increasing […]
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Solvent‐deficient method lowers grain‐boundary resistivity of doped ceria
August 18, 2020Nanoparticles of gadolinium‐doped cerium oxide (GDC) were synthesized using solvent‐deficient method and their sinterability and electrical properties were investigated using the powder and cold sintering process. The GDC powder was uniaxially pressed into cylindrically‐shaped pellets with a mixture of nitric acid and hydrogen peroxide at 200°C to encourage particle arrangement during forming process. These bulk […]
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Suppressed Grain Growth in Highly Porous Barium Titanate Foams by Two-step Sintering
April 26, 2017Porous barium titanate has gained significant attention in recent years for their potential use in applications such as scaffolds for bone tissue engineering, stress sensors, gas sensors, and many others. However, there is very little control over the grain size of the material during the sintering processes specially to achieve little or no growth of […]
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Enhanced Gamma Ray Sensitivity in Bismuth Triiodide Sensors through Volumetric Defect Control
April 26, 2017Some of the more attractive semiconducting compounds for ambient temperature radiation detector applications are impacted by low charge collection efficiency due to the presence of point and volumetric defects. This has been particularly true in the case of BiI3, which features very attractive properties (density, atomic number, band gap, etc.) to serve as a gamma […]
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