Publications by authors named "Ildiko Cora"
Article Synopsis
- High-throughput methods are crucial in materials science for effectively characterizing thin films, particularly using micro-combinatorial techniques to analyze multicomponent systems in one sample.
- This study focuses on the Y-Ti-O layer system, where variable YTiO samples were created via dual DC magnetron sputtering, revealing details about their structures and morphologies at different annealing temperatures (600-800 °C).
- The findings highlight that the YTiO phase with a pyrochlore structure is formed at a lower temperature of 700 °C, which is significant as it’s lower than most traditional preparation methods, showcasing the advantages of using phase maps in the study of materials.
Article Synopsis
- Transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS) revealed some structural anomalies like oxygen contamination in the upper layers of the AlN, although the initial atomic layers display perfect alignment.
- The study also finds that the AlN layer facilitates a two-dimensional electron gas (2DEG), characterized by high current transport and specific tunneling mechanisms, aligning well with theoretical expectations for AlN/GaN interfaces.
The possibility for kinetic stabilization of prospective 2D AlN was explored by rationalizing metal organic chemical vapor deposition (MOCVD) processes of AlN on epitaxial graphene. From the wide range of temperatures which can be covered in the same MOCVD reactor, the deposition was performed at the selected temperatures of 700, 900, and 1240 °C. The characterization of the structures by atomic force microscopy, electron microscopy and Raman spectroscopy revealed a broad range of surface nucleation and intercalation phenomena.
View Article and Find Full Text PDFWulfenite [lead(II) molybdate(VI)] is known as a scheelite structure in the I4(1)/a space group. The structure of the unusual `hemimorphic' wulfenite crystals from the Meǽica mine was refined in the noncentrosymmetric space group I ̅4 using a Pb/Mo exchange disorder model with the approximate composition Pb(0.94)Mo(0.
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