Observing growth under confinement: Sn nanopillars in porous alumina templates

Research output: Contribution to journalArticle

Abstract

Using a micro-focused high-energy X-ray beam, we have performed in situ time-resolved depth profiling during the electrochemical deposition of Sn into an ordered porous anodic alumina template. Combined with micro-diffraction we are able to follow the variation of the structure at the atomic scale as a function of depth and time. We show that Sn initially deposits at the bottom of the pores, and forms metallic nanopillars with a preferred [100] orientation and a relatively low mosaicity. The lattice strain is found to differ from previous ex situ measurements where the Sn had been removed from the porous support. The dendritic nature of the pore bottom affects the Sn growth mode and results in a variation of Sn grain size, strain and mosaicity. Such atomic scale information of nano-templated materials during electrodeposition may improve the future fabrication of devices.

Details

Authors
Organisations
External organisations
  • European Synchrotron Radiation Facility
  • Lund University
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Materials Chemistry
  • Atom and Molecular Physics and Optics
Original languageEnglish
Pages (from-to)4764-4771
Number of pages8
JournalNanoscale Advances
Volume1
Issue number12
Publication statusPublished - 2019 Oct 29
Publication categoryResearch
Peer-reviewedYes