Temperature effects of sputtering of Langmuir-Blodgett multilayers

Dan Mao, Daniel A. Brenes, Caiyan Lu, Andreas Wucher, Nicholas Winograd

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Time-of-flight secondary ion mass spectrometry (TOF-SIMS) and atomic force microscopy are used to characterize a wedge-shaped crater eroded by a 40-keV C60+ cluster ion beam on an organic thin film of 402 nm of barium arachidate multilayers prepared by using the Langmuir-Blodgett technique. Sample cooling at 90 K was used to help reduce chemical damage, to improve depth resolution and to maintain constant erosion rate during depth profiling. The film was characterized at 90, 135, 165, 205, 265 and 300 K. It is shown that sample cooling to 205 K or lower helps to inhibit erosion rate decay, whereas at 300 and 265 K, the erosion rate continues to drop after 250 nm of erosion, reaching approximately half of the initial value after removal of the entire film. Depth profiles are acquired from the SIMS images of the eroded wedge crater. The results suggest that sample cooling only slightly improves the altered layer thickness but eliminates the decrease in erosion rate observed at temperatures higher than 265 K.

Original languageEnglish (US)
Pages (from-to)65-67
Number of pages3
JournalSurface and Interface Analysis
Volume45
Issue number1
DOIs
StatePublished - Jan 1 2013

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Temperature effects of sputtering of Langmuir-Blodgett multilayers'. Together they form a unique fingerprint.

  • Cite this