Anderson-like localization in ultrathin nanocomposite alloy films on polymeric substrates

作者：Zuber Kamil; Merkens Kerstin; Froehlich Katja; Murphy Peter; Wong Leung Jennifer; Evans Drew^*

来源：Scripta Materialia, 2012, 67(10): 866-869.

DOI：10.1016/j.scriptamat.2012.08.016

• Physical vapour deposition (PVD)
• Phase transition
• Thin film coatings
• Electrical properties

The resistivity-structure relationship is experimentally investigated for ultrathin chrome cobalt (CrCox) alloy films sequentially co-sputtered on pre-coated polymeric substrates. For a narrow range of concentrations, we determine the crystal structure to be predominantly body-centred cubic and in one case having an additional Omega-hexagonal close-packed phase. The alloy film with the Omega-hexagonal close-packed phase shows an anomalous resistivity temperature relationship. This is consistent with the associated crystal structure change and is attributed to an Anderson-like localization of carriers.

• 出版日期2012-11