Article
Structural control in porous/compact multilayer systems grown by magnetron sputtering
Author/s | García Valenzuela, Aurelio
López Santos, Carmen Álvarez Molina, Rafael Rico, Víctor Cotrino Bautista, José González Elipe, Agustín Rodríguez Palmero Acebedo, Alberto |
Department | Universidad de Sevilla. Departamento de Física Aplicada I Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2017-10-23 |
Deposit Date | 2024-06-19 |
Published in |
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Abstract | In this work we analyze a phenomenon that takes place when growing magnetron sputtered porous/compact multilayer systems by alternating the oblique angle and the classical configuration geometries. We show that the compact ... In this work we analyze a phenomenon that takes place when growing magnetron sputtered porous/compact multilayer systems by alternating the oblique angle and the classical configuration geometries. We show that the compact layers develop numerous fissures rooted in the porous structures of the film below, in a phenomenon that amplifies when increasing the number of stacked layers. We demonstrate that these fissures emerge during growth due to the high roughness of the porous layers and the coarsening of a discontinuous interfacial region. To minimize this phenomenon, we have grown thin interlayers between porous and compact films under the impingement of energetic plasma ions, responsible for smoothing out the interfaces and inhibiting the formation of structural fissures. This method has been tested in practical situations for compact TiO2/porous SiO2 multilayer systems, although it can be extrapolated to other materials and conditions. |
Funding agencies | Universidad de Sevilla Junta de Andalucía Ministerio de Economía y Competitividad (MINECO). España |
Project ID. | TEP8067
TEP5283 P12–2265MO MAT2013-42900-P MAT2013-40852-R MAT2016-79866-R MAT2015-69035-REDC |
Citation | García Valenzuela, A., López Santos, C., Álvarez Molina, R., Rico, V., Cotrino Bautista, J., González Elipe, A.R. y Palmero Acebedo, A. (2017). Structural control in porous/compact multilayer systems grown by magnetron sputtering. Nanotechnology, 28 (46), Article number 465605. https://doi.org/10.1088/1361-6528/aa8cf4. |
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