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Marenych, Olexandra
in Cooperation with on an Cooperation-Score of 37%
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Publications (6/6 displayed)
- 2022Effects of Sintering Temperature and Yttria Content on Microstructure, Phase Balance, Fracture Surface Morphology, and Strength of Yttria-Stabilized Zirconiacitations
- 2022The Effect of Yttria Content on Microstructure, Strength, and Fracture Behavior of Yttria-Stabilized Zirconiacitations
- 2020Strengthening Mechanisms in Nickel-Copper Alloys: A Reviewcitations
- 2020Creating thin magnetic layers at the surface of Sb2Te3 topological insulators using a low-energy chromium ion beamcitations
- 2019Investigation of X80 Line Pipe Steel Fracture during Tensile Testing Using Acoustic Emission Monitoringcitations
- 2018New Technology to Produce 1 GPa Low Carbon Microalloyed Steels from Cast Stripcitations
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article
Creating thin magnetic layers at the surface of Sb2Te3 topological insulators using a low-energy chromium ion beam
Abstract
<p>The surfaces of Sb2Te3 topological insulator crystals were implanted using a 40 keV chromium ion beam. To facilitate uniform doping, the Sb2Te3 was passivated with a thin TiO2 film before the implantation step. The resulting chemical structure was studied using atomic-resolution transmission electron microscopy. A fluence of 7 × 1015 ions/cm2 at 40 keV lead to amorphization of the Sb2Te3 surface, with chromium predominantly incorporated in the amorphous layer. Heating to 200 °C caused the amorphous region to recrystallize and led to the formation of a thin chromium-rich interfacial layer. Near-edge x-ray absorption spectroscopy indicates a uniform valence state of Cr3+ throughout, with no evidence of metallic clustering. High-temperature superparamagnetic behavior was detected up to 300 K, with an increased magnetic moment below 50 K.</p>