Abstract
Jitter noise reduction can be achieved by controlling the position of magnetic grains, but write synchronization is needed to take advantage of the potential reduction. A periodic read-back response can be obtained from DC-erased bits, which is composed of rows of grains. In this paper, the feasibility of creating a clock signal for write synchronization using this periodicity of the read-back response is investigated. As a result, it was confirmed that a clock signal can be created by using the precise periodicity of the read-back response.
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