Abstract
The readout mechanism in a trilayer double mask type rear aperture detection (DRAD) magnetically induced super resolution (MSR) disk was studied by readout waveform analysis. A signal enhancement phenomenon was observed, which was ascribed to magnetic domain expansion. Two kinds of magnetic domain expansion mechanisms for the erase direction readout field (Hr) and for the write direction Hr were found. In the case of write direction Hr, a magnetic domain can expand toward the rear mask before the mark contacts with the rear mask from the estimation of mark size and mask position. Edge jitter was evaluated in each readout mode and characterized according to the readout mechanism. Both high-resolution power of MSR and signal amplitude enhancement due to magnetic domain expansion contributed to improvement of DRAD disk readout signal qualities.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
