Abstract
Abstract As the Hard Disk Drive industry migrates from PMR to HAMR technology, it is important to understand differences in the measurement of contact detection between PMR vs. HAMR media. Compared to PMR media, HAMR media tends to be rougher and has a higher thermal conductance. Since some contact detection methods rely on interface heat transfer, it is important to understand the impact of media type on measurements. In the current paper, we present results from mechanical spinstand studies using the integrated thermistor in the head. The heater in the head is dithered at a fixed frequency and the thermistor response is analyzed at that frequency. Changes in the thermistor resistance as a function of head-media clearance are used to understand how thermal conduction differences between PMR vs. HAMR media may impact contact detection. We find that heat conduction is different between HAMR and PMR media types and can have an impact on contact detection.
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.
