Abstract

First order Raman absorption in materials with the rock salt crystal structure is forbidden. Its appearance in real crystals results from the presence of vacancies and other defects. For TaxN polycrystalline thin films, we found that imperfections that reduce the coherence length contribute to the appearance of the first order Raman spectrum. This investigation enables us to better understand the anomalous concentration dependence of the resistivity of TaxN polycrystalline thin films fabricated using reactive sputtering at 450°C and 4.9 mTorr nitrogen pressures on amorphous substrates.

Original languageEnglish (US)
Article number043707
JournalJournal of Applied Physics
Volume114
Issue number4
DOIs
StatePublished - Jul 28 2013

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halites
disorders
Raman spectra
crystal structure
defects
thin films
sputtering
nitrogen
electrical resistivity
crystals

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Investigations of the disorder in the TaxN thin films : On the first order Raman spectrum of the rock salt crystal structure. / Očko, M.; Žonja, S.; Salamon, K.; Ivanda, M.; Yu, L.; Newman, Nathan.

In: Journal of Applied Physics, Vol. 114, No. 4, 043707, 28.07.2013.

Research output: Contribution to journalArticle

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AU - Newman, Nathan

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