E. M. Brunsman, R. Sutton, E. Bortz, S. Kirkpatrick, K. Midelfort, J. Williams, P. Smith, M. E. McHenry, S. A. Majetich, J. O. Artman, M. De Graef, S. W. Staley,
Magnetic properties of carbon‐coated, ferromagnetic nanoparticles produced by a carbon‐arc method Journal of Applied Physics. ,vol. 75, pp. 5882- 5884 ,(1994) ,
10.1063/1.355548