The Open Materials Science Journal

2009, 3 : 28-32
Published online 2009 February 13. DOI: 10.2174/1874088X00903010028
Publisher ID: TOMSJ-3-28

Magnetic Behavior at Low Temperature of Carbon Foams Prepared by the Controlled Pyrolysis of Saccharose

Juan Matos Tamis Dudo , Christopher P. Landee , Pedro Silvad and Mark M. Turnbull
Chemistry Centre, Venezuelan Institute for Scientific Research, 21827, Caracas 1020-A, Venezuela.

ABSTRACT

Carbon films and foams were obtained by the controlled pyrolysis of saccharose. Their irregular topology was confirmed by SEM. The presence of unpaired electrons was established via EPR spectroscopy. Magnetization as a function of both temperature and applied external field was collected using a SQUID Magnetometer and it was confirmed that the samples were paramagnetic at low temperatures (i.e 1.8K-10K) and diamagnetic at temperatures higher than 10K. Results showed that saccharose can be used as a precursor for the synthesis of carbon materials for magnetic applications at low temperature.