Ultrathin, epitaxial cerium dioxide on silicon

Structure, Morphology and Reducibility of Epitaxial Cerium Oxide Ultrathin Films and Nanostructures

Cerium oxide is a very interesting material that finds applications in many different fields, such as catalysis, energy conversion, and biomedicine. An interesting approach to unravel the complexity of real systems and obtain an improved understanding of cerium oxide-based materials is represented by the study of model systems in the form of epitaxial ultrathin films or nanostructures supported...

Biocompatibility of cerium dioxide and silicon dioxide nanoparticles with endothelial cells

Cerium dioxide (CeO2) and silicon dioxide (SiO2) nanoparticles are of widespread use in modern life. This means that human beings are markedly exposed to them in their everyday life. Once passing biological barriers, these nanoparticles are expected to interact with endothelial cells, leading to systemic alterations with distinct influences on human health. In the present study we observed the ...

Spectroscopy of ultrathin epitaxial rutile

Epitaxial ultra-thin titanium dioxide films of 0.3 to ~7nm thickness on a metal single crystal substrate have been investigated by high resolution vibrational and electron spectroscopies. The data complement previous morphological data provided by scanned probe microscopy and low energy electron diffraction to provide very complete characterisation of this system. The thicker films display elec...

Epitaxial La-doped SrTiO3 on silicon: A conductive template for epitaxial ferroelectrics on silicon

Use of an epitaxial conducting template has enabled the integration of epitaxial ferroelectric perovskites on silicon. The conducting template layer, LaxSr12xTiO3 ~LSTO!, deposited onto ~001! silicon wafers by molecular-beam epitaxy is then used to seed $001%-oriented epitaxial perovskite layers. We illustrate the viability of this approach using PbZr0.4Ti0.6O3 ~PZT! as the ferroelectric layer ...

Intrinsic electronic switching time in ultrathin epitaxial vanadium dioxide thin film