Measurements of the write error rate in bit patterned magnetic recording at 100– 320 Gb/ in 2
Résumé
We demonstrate a technique for measuring the intrinsic bit-error-rate as a function of write misregistration in bit patterned media. We examine the recording performance at bit densities of 100, 200, and 320 Gigabits per square inch ͑Gb/ in 2 ͒ and find that the on-track write misregistration margin for error rates below 10 −4 is ϳ1 / 4 of a bit length for all three densities. We demonstrate two-dimensional recording at sub 10 −4 bit error rate at 100 and 200 Gb/ in 2 and with a 10 −3 bit error rate at 320 Gb/ in 2.
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