Jump to main content
Jump to site search

Issue 34, 2018
Previous Article Next Article

Microstructure and oxidation resistance of relaxed epitaxial nickel thin films grown on (100)- and (110)-SrTiO3 substrates by pulsed laser deposition

Author affiliations

Abstract

The relaxed epitaxial growth of Ni thin films has been successfully performed on both (100)- and (110)-oriented SrTiO3 substrates by pulsed laser deposition, as revealed by pole figures realized by X-ray micro-diffraction and rocking curve measurements. In the case of Ni films deposited on the (110)-SrTiO3 substrate, the advanced microstructural X-ray diffraction study (ω-scans vs. φ and reciprocal space maps) evidences the existence of two domains disoriented with respect to the substrate crystallographic axes (both in-plane with +5° and −5° tilts (±1°) and out-of-plane with +3.7° and −3.7° tilts (±0.1°), respectively). Besides the lattice misfit constraints, the layer orientation can also be controlled by strain/surface energy balance. The surface energy modeling of nickel makes it possible to explain the observed growth by low surface energy anisotropy. Furthermore, the high temperature oxidation resistance of the films under air has been studied by in situ high-temperature X-ray diffraction. While the results show the formation of a NiO oxide layer which retains the initial orientation of the Ni film, the Ni corrosion temperature is found to be 500 °C and 375 °C when grown on (100)- and (110)-SrTiO3 substrates, respectively. Such a high corrosion temperature for Ni films grown on the (100)-SrTiO3 substrate is linked to their high density, as observed by atomic force microscopy.

Graphical abstract: Microstructure and oxidation resistance of relaxed epitaxial nickel thin films grown on (100)- and (110)-SrTiO3 substrates by pulsed laser deposition

Back to tab navigation

Supplementary files

Publication details

The article was received on 15 May 2018, accepted on 31 Jul 2018 and first published on 31 Jul 2018


Article type: Paper
DOI: 10.1039/C8CE00797G
Citation: CrystEngComm, 2018,20, 5061-5073
  •   Request permissions

    Microstructure and oxidation resistance of relaxed epitaxial nickel thin films grown on (100)- and (110)-SrTiO3 substrates by pulsed laser deposition

    G. Lefevre, S. Saitzek, F. Blanchard, A. Ferri, P. Roussel, R. Desfeux and A. Sayede, CrystEngComm, 2018, 20, 5061
    DOI: 10.1039/C8CE00797G

Search articles by author

Spotlight

Advertisements