Effect of oxygen pressure on stoichiometric transfer in laser ablation of Pr3+ doped Gd2O3–Ga2O3 binary system

Lančok, J.; Novotný, Michal; Volfová, Lenka; More-Chevalier, J.; Péreira, A.

doi:10.1116/6.0001001

Cited by 3 publications

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References 40 publications

(50 reference statements)

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“…PLD is a simple, cost-effective, and versatile technique that allows control of the morphology and thickness of thin films. Furthermore, this technique makes it possible to obtain doped structures or some types of complex alloys (Lancok et al, 2021;Lu et al, 2021;Spellauge et al, 2021;Manikandan et al, 2015;Manikandan et al, 2014), which is its main advantage. Due to the high energies of the ionized and ejected species in laser plumes, PLD samples can be synthesized at lower deposition temperatures compared to PVD techniques (Cheung, 1994).…”

Section: Introductionmentioning

confidence: 99%

Research in Basic Sciences: Results of some math and physics projects

Landázuri¹,

Vargas²,

Zapata³

et al. 2022

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Desde nuestra Facultad se presentan trabajos resultados de investigación que le aportan ignificativamente a las aplicaciones de las ciencias básicas y que son el resultado del compromiso y la dedicación de nuestros docentes investigadores, quienes trabajan para abordar problemas complejos y generar soluciones innovadoras y sostenibles. En el primer capítulo se presenta un estudio de las propiedades en nuevos materiales, en este caso del crecimiento de películas delgadas de grafeno en sustrato de silicio utilizando el método de deposición por láser pulsado (DLP) donde se utilizaron 6 técnicas de caracterización (Espectroscopía Raman, IRTF, MEB, SED, MFA, MACA) y como conclusión se tiene que las muestras similares al grafeno presentan propiedades de hidrofobicidad y las muestras de carbono amorfo tienen propiedades hidrofílicas. En el segundo capítulo se presenta un modelamiento matemático y una discusión sobre la existencia de soluciones de segunda clase en una ecuación de Tricomi, se plantea la existencia de soluciones periódicas de una generalización de la ecuación de Tricomi, el estudio se realiza mediante métodos perturbativos; de igual forma, se usa la función de Melnikov para encontrar las condiciones bajo las cuales se conservan las curvas homoclínicas. En el tercer capítulo se plantea una metodología de enseñanza-aprendizaje para enseñar la geometría descriptiva básica y la resolución de problemas a través del software Autocad.

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Section: Introductionmentioning

confidence: 99%

Research in Basic Sciences: Results of some math and physics projects

Landázuri¹,

Vargas²,

Zapata³

et al. 2022

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Thermally stimulated exo-electron emission and desorption from Lu2O3:Eu3+ surfaces

et al. 2023

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Influence of substrate temperature on graphene oxide thin films synthesis by laser ablation technique

López

Castellanos

Riascos

2021

Journal of Vacuum Science &Amp; Technology A

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In this paper, we studied the influence of the substrate temperature (Ts) on the deposition of carbon thin films by the pulsed laser deposition technique. Thin films were synthesized using a highly oriented pyrolytic graphite target, which was irradiated by the fundamental harmonic (1064 nm) of a Nd:YAG pulsed laser. In the experimental conditions, the Ts varied from room temperature to 500 °C, the gas pressure (oxygen, 50 mTorr) remained the same for all samples, and the ablation time was 5 min for each thin film. The samples were characterized by x-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy in conjunction with energy dispersive x-ray spectroscopy, atomic force microscopy, and contact angle measurement. The characterization results allowed us to determine that the thin films deposited on silicon substrates at 400 and 500 °C (samples S1 and S2) were multilayers graphene oxide. From XRD, Raman spectroscopy, and FTIR results, we concluded that the degree of oxidation and graphitization of the carbon thin films were influenced by the Ts. Additionally, the contact angle measurement showed that for samples S1 and S2, the contact angle was greater than 94°, and for samples S3 and S4 (amorphous carbon), it was less than 62°.

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Effect of oxygen pressure on stoichiometric transfer in laser ablation of Pr3+ doped Gd2O3–Ga2O3 binary system

Abstract: Note: This paper is part of the Special Topic Collection on Gallium Oxide Materials and Devices.

Cited by 3 publications

References 40 publications

Research in Basic Sciences: Results of some math and physics projects

Research in Basic Sciences: Results of some math and physics projects

Thermally stimulated exo-electron emission and desorption from Lu2O3:Eu3+ surfaces

Influence of substrate temperature on graphene oxide thin films synthesis by laser ablation technique

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