Electronic and crystal structure and bonding in Ti-based ternary solid solution nitrides and Ti-Cu-N nanocomposite films

P. Patsalas, G. Abadias, Grigorios Matenoglou, L. E. Koutsokeras, Ch E. Lekka

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Complex transition metal nitrides (TMN) have lately gained special attention in an effort to improve the properties of their binary counterparts. In this work we review a very wide range of binary and ternary transition metal nitrides of the form: TixTM1-xN (TM=Zr,Hf,Nb,Ta,Mo,W) over the whole composition x range (0<x<1) grown by Pulsed Laser Deposition (PLD), Dual Ion Beam Sputtering (DIBS) and Magnetron Sputtering (MS). We identify the bonding mechanism and, despite the possible different valence electron configuration of the constituent elements, we show that TMNs are completely soluble to each other due to the hybridization of the d and sp electrons of the metals and nitrogen, respectively. Optical absorption bands are manifested due to the N-p→Me-d interband transition and the t2g→eg transition due to splitting of the metals' d band, proving the partial ionic character of the bonds in TMNs. In addition, we consider the growth of Ti-Cu-N nanocomposites by PLD and MS. We investigate the difference in the atomic structure and bonding in both cases of ternary and nanocomposite nitrides, for sequential deposition of Ti and TM or Cu (achieved in PLD) or simultaneous deposition (achieved in DIBS, MS) and get insights for the kinetic effects.

Original languageEnglish
Pages (from-to)1324-1330
Number of pages7
JournalSurface and Coatings Technology
Volume205
Issue number5
DOIs
Publication statusPublished - 25 Nov 2010
Externally publishedYes

Fingerprint

Nanocomposite films
Pulsed laser deposition
Nitrides
Magnetron sputtering
pulsed laser deposition
Electronic structure
nitrides
metal nitrides
Solid solutions
magnetron sputtering
nanocomposites
solid solutions
Crystal structure
electronic structure
Ion beams
crystal structure
Transition metals
Sputtering
Nanocomposites
sputtering

Keywords

  • Bonding
  • Physical vapor deposition
  • Structure
  • Ternary nitrides

ASJC Scopus subject areas

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

Cite this

Electronic and crystal structure and bonding in Ti-based ternary solid solution nitrides and Ti-Cu-N nanocomposite films. / Patsalas, P.; Abadias, G.; Matenoglou, Grigorios; Koutsokeras, L. E.; Lekka, Ch E.

In: Surface and Coatings Technology, Vol. 205, No. 5, 25.11.2010, p. 1324-1330.

Research output: Contribution to journalArticle

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