Grain size, texture, and crystallinity in lanthanum monosulfide thin films grown by pulsed laser deposition

Download
  1. Get@NRC: Grain size, texture, and crystallinity in lanthanum monosulfide thin films grown by pulsed laser deposition (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1016/j.tsf.2012.10.022
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleThin Solid Films
ISSN0040-6090
Volume524
Pages166172; # of pages: 7
Subjectpulsed laser deposition; X-ray diffraction; transmission electron microscopy; atomic force microscopy; Raman spectroscopy
AbstractWe report a detailed investigation of the growth of lanthanum monosulfide (LaS) thin films by pulsed laser deposition on (001) magnesium oxide (MgO) substrates in a background of H2S for the purpose of optimizing their crystallinity, texture, and grain size. A variety of films were grown while varying the laser repetition rate, the temperature of the substrate, and the partial pressure of H2S. The thin films were characterized by X-ray diffraction (XRD), atomic force microscopy (AFM), Raman spectroscopy, and high resolution transmission electron microscopy. Films grown at 500 °C with a H2S background pressure of 3.4 × 10− 4 Pa and a laser repetition rate of 8 Hz produced the LaS film with the largest grains whose size averaged 293 nm. The XRD pattern of these films revealed that their orientation was predominantly (200). AFM images of the surface of these films showed large plate-like grains. This contrasts with the fine grain structure observed in LaS films grown at a lower substrate temperature and lower H2S pressure.
Publication date
PublisherElsevier
LanguageEnglish
AffiliationNational Research Council Canada; Information and Communication Technologies; Measurement Science and Standards
Peer reviewedYes
NPARC number21268056
Export citationExport as RIS
Report a correctionReport a correction
Record identifier970705c3-868a-4a63-a85a-c28b915428f2
Record created2013-04-05
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)