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

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• 作者：Kamil Zuber ; Kerstin Merkens ; Katja Fr?hlich ; Peter Murphy ; Jennifer Wong-Leung ; Drew Evans
• 关键词：Physical vapour deposition (PVD) ; Phase transition ; Thin film coatings ; Electrical properties
• 刊名：Scripta Materialia
• 出版年：2012
• 出版时间：November, 2012
• 年：2012
• 卷：67
• 期：10
• 页码：866-869
• 全文大小：370 K

文摘

The resistivity-structure relationship is experimentally investigated for ultrathin chrome cobalt (CrCo_x) 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 ¦¸-hexagonal close-packed phase. The alloy film with the ¦¸-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.