Hostname: page-component-7c8c6479df-ph5wq Total loading time: 0 Render date: 2024-03-19T03:26:13.723Z Has data issue: false hasContentIssue false

Polymer-derived SiCN composites with magnetic properties

Published online by Cambridge University Press:  31 January 2011

Atanu Saha
Affiliation:
Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309
Sandeep R. Shah
Affiliation:
Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309
Rishi Raj
Affiliation:
Department of Mechanical Engineering, University of Colorado, Boulder, Colorado 80309
Stephen E. Russek
Affiliation:
National Institute of Standards and Technology, Boulder, Colorado 80305
Get access

Abstract

Composites consisting of particles of α-iron dispersed in silicon carbonitride (SiCN) were fabricated by a polymer route. The composites had iron inclusions with the same magnetization as bulk iron, but they resisted oxidation up to 500°C and had a hardness of 5-7 GPa. The composites behaved as ferromagnets, albeit with a low susceptibility attributed to the pinning of the domains by imperfect interfaces and to the elastic resistance from the SiCN matrix. This low-cost, low-temperature processing method can be used to make different kinds of ceramic composites with multifunctional properties.

Type
Rapid Communications
Copyright
Copyright © Materials Research Society 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.An, L., Riedel, R., Konetschny, C., Kleebe, H-J., and Raj, R., J. Am. Ceram. Soc. 81, 1349 (1998).CrossRefGoogle Scholar
2.Raj, R., An, L., Shah, S., Riedel, R., Fasel, C., and Kleebe, H-J., J. Am. Ceram. Soc. 84, 1803 (2001).CrossRefGoogle Scholar
3.Liew, L., Zhang, W., An, L., Shah, S., Lou, R., Liu, Y., Cross, T., Anseth, K., Bright, V., Daily, J.W., and Raj, R., Am. Cer. Soc. Bull., 80, 25 (2001).Google Scholar
4.Riedel, R., Kienzle, A., Dreßler, W., Ruwisch, L., Bill, J., and Aldinger, F., Nature 382, 796 (1996).Google Scholar
5.Raj, R., Riedel, R., and Soraru, G.D., in Special Issue of the J. American Ceramic Society, edited by Raj, R., Riedel, R., and Soraru, G.D., 84, 2158 (2001).Google Scholar
6.Shah, S.R. and Raj, R., Acta Mater. 50, 4093 (2002).CrossRefGoogle Scholar