Výsledky vyhledávání - "Kycia, Stefan W."

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Role of filler lanthanide ions on lattice dynamics of phosphide skutterudites RFe$_4$P$_{12}$ (R = La, Ce, and Pr) from first principles

Autor: Penacchio, Rafaela F. S., Burns, Nicholas, Estradiote, Maurício B., Torikachvili, Milton S., Kycia, Stefan W., Morelhão, Sérgio L.

Phosphide skutterudites primarily show promise for thermoelectric applications due to their chemical stability at high temperatures and relatively low cost. Ion doping and band gap engineering have been used to enhance their typically poor thermoelec

Externí odkaz: http://arxiv.org/abs/2402.00824

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Proper usage of Scherrer's and Guinier's formulas in X-ray analysis of size distribution in systems of monocrystalline CeO2 nanoparticles

Autor: Valério, Adriana, Trindade, Fabiane J., Penacchio, Rafaela F. S., Ramos, Bria C., Damasceno, Sérgio, Estradiote, Maurício B., Rodella, Cristiane B., Ferlauto, André S., Kycia, Stefan W., Morelhão, Sérgio L.

Small-angle X-ray scattering (SAXS) and X-ray diffraction (XRD) techniques are widely used as analytical tools in the optimization and control of nanomaterial synthesis processes. In crystalline nanoparticle systems with size distribution, the discre

Externí odkaz: http://arxiv.org/abs/2203.00866

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Morphology Control in van der Waals Epitaxy of Bismuth Telluride Topological Insulators

Autor: Fornari, Celso I., Abramof, Eduardo, Rappl, Paulo H. O., Kycia, Stefan W., Morelhão, Sérgio L.

Bismuth telluride have regained significant attention as a prototype of topological insulator. Thin films of high quality have been investigated as a basic platform for novel spintronic devices. Low mobility of bismuth and high desorption coefficient

Externí odkaz: http://arxiv.org/abs/2008.02180

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Phonon Scattering Mechanism in Thermoelectric Materials Revised via Resonant X-ray Dynamical Diffraction

Autor: Valério, Adriana, Penacchio, Rafaela F. S., Estradiote, Maurício B., Cantarino, Marli R., Garcia, Fernando A., Morelhão, Sérgio L., Rafter, Niamh, Kycia, Stefan W., Calligaris, Guilherme A., Remédios, Cláudio M. R.

Publikováno v: MRS Communications, 1-7 (2020)

Engineering of thermoelectric materials requires an understanding of thermal conduction by lattice and electronic degrees of freedom. Filled skutterudites denote a large family of materials suitable for thermoelectric applications where reduced latti

Externí odkaz: http://arxiv.org/abs/2006.12747

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