2012 Volume 36 Issue 1_1 Pages 1-4
This study experimentally compared barium ferrite with conventional metal particulate media in terms of their chemical corrosion resistance and thermal stability−two important factors determining archival stability. The results confirmed the superior properties of barium ferrite even at the smaller particle sizes necessary for future high-capacity media. The thermal decay rate of the barium ferrite media was in the range from 0.04 to 0.07 dB/decade, and the degradation of saturation magnetization after 14 days in a Battelle Class II environment was only 1%. These values were less than those for metal particulate media at the same particle volume.
