Evaluation of High Data Rate Performances of PMR Components

An effort has been made on evaluating magnetic and electrical performances of perpendicular recording (PMR) components at high recording data rates (2.0-3.0 Gbit/s). In general, a fully functional PMR recording subsystem up to 3.0 Gbit/s has been demonstrated experimentally in spin-stand testing by using product recording heads, media, preamps, and channels. Particularly, we studied the influence of the novel pole structures of recording heads on the high data rate performances. The obtained experimental results show that the novel pole structure design of recording write head has some significant impact on the performance of the bit error rate, write ability, and other parametric data at high data rate situations.