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Start Over Author "Jordi Antoja-Lleonart" Journal nanomaterials
2 results on '"Jordi Antoja-Lleonart"'

1. Growth and Crystallization of SiO2/GeO2 Thin Films on Si(100) Substrates

Author

Jordi Antoja-Lleonart, Václav Ocelík, Silang Zhou, Kit de Hond, Gertjan Koster, Guus Rijnders, and Beatriz Noheda

Subjects
quartz, silica thin films, pulsed laser deposition, devitrifying agent, crystallization, electron back-scatter diffraction, Chemistry, QD1-999
Abstract

The growth of α-quartz-based piezoelectric thin films opens the door to higher-frequency electromechanical devices than those available through top-down approaches. We report on the growth of SiO2/GeO2 thin films by pulsed laser deposition and their subsequent crystallization. By introducing a devitrifying agent uniformly within the film, we are able to obtain the α-quartz phase in the form of platelets with lateral sizes above 100 μm at accessible temperatures. Films containing different amounts of devitrifying agent are investigated, and their crystallinity is ascertained with X-ray diffraction and electron back-scatter diffraction. Our work highlights the difficulty in crystallization when competing phases arise that have markedly different crystalline orientation.

Published
2021
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2. Growth and Crystallization of SiO2/GeO2 Thin Films on Si(100) Substrates

Author

Guus Rijnders, Vaclav Ocelik, Jordi Antoja-Lleonart, Silang Zhou, Beatriz Noheda, Kit de Hond, Gertjan Koster, Nanostructures of Functional Oxides, Solid State Materials for Electronics, MESA+ Institute, and Inorganic Materials Science

Subjects
Diffraction, Materials science, crystallization, General Chemical Engineering, Electron, quartz, Article, law.invention, Pulsed laser deposition, Crystallinity, Chemistry, TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES, Chemical engineering, electron back-scatter diffraction, law, Phase (matter), General Materials Science, Crystallization, Thin film, Quartz, silica thin films, pulsed laser deposition, QD1-999, devitrifying agent
Abstract

The growth of α-quartz-based piezoelectric thin films opens the door to higher-frequency electromechanical devices than those available through top-down approaches. We report on the growth of SiO2/GeO2 thin films by pulsed laser deposition and their subsequent crystallization. By introducing a devitrifying agent uniformly within the film, we are able to obtain the α-quartz phase in the form of platelets with lateral sizes above 100 μm at accessible temperatures. Films containing different amounts of devitrifying agent are investigated, and their crystallinity is ascertained with X-ray diffraction and electron back-scatter diffraction. Our work highlights the difficulty in crystallization when competing phases arise that have markedly different crystalline orientation.

Published
2021

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