Synthesis route for obtaining manganese oxide-based nanostructures

✍ Scribed by A.G. Leyva; P. Stoliar; M. Rosenbusch; P. Levy; J. Curiale; H. Troiani; R.D. Sanchez

• Book ID: 103883416
• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 295 KB
• Volume: 354
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2004.09.040

✦ Synopsis

Hollow and solid cylindrical nanometric structures of mixed valent manganese oxide-based compounds were obtained by wetting sacrificial porous substrates. Plastic templates with pores ranging 0.05-1 mm were employed; a twostage thermal process was performed to obtain La 0.325 Pr 0.300 Ca 0.375 MnO 3 or La 2/3 Sr 1/3 MnO 3 . Polycrystalline selfstanding tubes were obtained for pore size higher than 0.2 mm, while wires were obtained for diameters below 0.1 mm. We discuss the role of the template pore size in determining the synthesis route, the formation of different intermediate compounds, and different morphologies.