Epitaxial Growth of SrTiO

J.A. Padilla, E. Xuriguera, L. Rodríguez, A. Vannozzi, M. Segarra, G. Celentano, M. Varela

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Abstract

The growth of epitaxial {001} SrTiO3(STO) on low-cost cube-textured Cu-based clad substrate at low temperature was carried out by means of pulsed laser deposition (PLD). STO film was deposited in one step under a reducing atmosphere (5% H2and 95% Ar mixture) to prevent the oxidation of the metal surface. The optimization of PLD parameters leads to a sharpest biaxial texture at a temperature as low as 500 °C and a thickness of 500 nm with a (100) STO layer. The upper limit of highly textured STO thickness was also investigated. The maximum thickness which retains the best quality {001} texture is 800 nm, since the texture is preserved not only through the layer but also on the surface. Atomic force microscopy (AFM) and scanning electron microscopy (SEM) measurements showed that STO films are continuous, dense, and smooth with very low roughness (between 5 and 7 nm). This paper describes the development of STO layer by means of PLD in absence of oxygen throughout the process, suggesting an alternative and effective method for growing highly {001} textured STO layer on low-cost metal substrates.
Original languageEnglish
Article number226
Pages (from-to)-
JournalNanoscale Research Letters
Volume12
Issue number1
DOIs
Publication statusPublished - 1 Dec 2017
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Padilla, J. A., Xuriguera, E., Rodríguez, L., Vannozzi, A., Segarra, M., Celentano, G., & Varela, M. (2017). Epitaxial Growth of SrTiO. Nanoscale Research Letters, 12(1), -. [226]. https://doi.org/10.1186/s11671-017-1997-9