Orientation and switching properties of advanced metal particle recording media

The need for higher storage densities has led to MP pigment formulations with a small physical size, where thermal activation is significant. Accordingly, over short timescales, a substantial increase in remnant coercivity has been observed[1,2]. In this paper a study of high speed switching in a series of advanced MP tape samples has been undertaken. The four samples were prepared from the same magnetic pigment with a length of l50nm, but oriented to varying degree during coating so that the tape squareness ranged from 0.69 to 0.88