A novel method to synthesize cobalt oxide (Co3O4) nanowires from cobalt (Co) nanobowls

✍ Scribed by A. K. Srivastava; S. Madhavi; R. V. Ramanujan

• Book ID: 105365600
• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 322 KB
• Volume: 207
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200925503

✦ Synopsis

Abstract

A novel method suitable for the synthesis of the cobalt oxide (Co~3~O~4~) nanowires at targeted regions is presented in this report. Cobalt (Co) nanobowls synthesized by colloidal crystal directed assembly were transformed into Co~3~O~4~ nanowires by a simple heat treatment process. Co nanobowls exhibited a two phase (h.c.p. + f.c.c.) microstructure while single phase microstructure was observed for Co~3~O~4~ nanowires. Ferromagnetic Co nanobowls showed a dependence of coercivity on bowl size while Co~3~O~4~ exhibited weak ferromagnetic behavior.