Fabrication and transport properties of 12CaO·7Al2O3(C12A7) electride nanowire

✍ Scribed by Nishio, Y. ;Nomura, K. ;Miyakawa, M. ;Hayashi, K. ;Yanagi, H. ;Kamiya, T. ;Hirano, M. ;Hosono, H.

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 743 KB
• Volume: 205
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200778901

✦ Synopsis

Abstract

Electron‐doped 12CaO·7Al~2~O~3~ (C12A7) nanowires (NWs) were fabricated by two approaches. First, spatially selective electron doping of C12A7 films was examined by using a chemical method specific to C12A7. However, the conductive NW was not formed due to diffusion of oxygen in the C12A7 films to the conductive area. Secondly, a combination of dry etching and electron doping was examined. NWs with conductivities ∼6 S/cm at 300 K were successfully fabricated by this method. The temperature dependence of the conductivity in the NWs exhibited almost degenerated conduction down to 5 K. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)