HGH SPEED SWITCHING STUDIES IN MAGMZIC RECORDING MEDK

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" HGH SPEED SWITCHING STUDIES IN MAGMZIC RECORDING MEDK "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	151656
Doc. No	:	ET23448
Main Entry	:	STEVEN M. STINNETT
Title Proper	:	HGH SPEED SWITCHING STUDIES IN MAGMZIC RECORDING MEDK
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	The natmal precessiod response of the magnetization to an applied field has dwayscomplicated the high fhquency switching process in magnetic devices. Until recently,however, magnetic recordhg, which has dominated on-line and archival storage, could betreated quasi-statically. However, as Llnear d d e s approach 500 kbits/in at disk rotationspeeds of ~0,000 RPW recording must occur - lo4 s, the reghe where precessiodeffects wiII become importimt At the same time, the grain size h media bas been reducedto < I0 nm while siinuttaneousIy reducing the intergranular exchange coupling. The dis reduced thermal stability, resulhing h remanent coercivitiis w k h at lo4 s are > 4000Oe decceasiDg to dues below 2500 Oe at long times (lo9 s). In this dkxtation, the timedepeadent magnetic switching properties of -c pmtiCU18fe tape and thin fi disk......-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL46687.pdf
Title and statement of responsibility and	:	HGH SPEED SWITCHING STUDIES IN MAGMZIC RECORDING MEDK [Thesis]