Active Flying-height Control of Magnetic Head Slider using MEMS Thermal Actuator

Autor:	Toshiya Shiramatsu, Show Saegusa, Masahiko Soga, Masayuki Kurita, Atsushi Kato, Kouji Miyake, Hideaki Tanaka, Mike Suk
Rok vydání:	2006
Předmět:	Engineering business.industry Mechanical Engineering Acoustics Electrical engineering Time constant Industrial and Manufacturing Engineering Flying height Mechanics of Materials Slider MEMS thermal actuator Thermal Heat transfer Head (vessel) business Actuator
Zdroj:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C. 72:267-273
ISSN:	1884-8354 0387-5024
DOI:	10.1299/kikaic.72.267
Popis:	Today's head/disk interface design has a wide flying height distribution due to manufacturing tolerances, environmental variations, and write-induced thermal protrusion. To reduce the magnetic spacing loss due to these effects, we have developed an active head slider with nano-thermal actuator. The magnetic spacing of these sliders can be controlled in-situ during operation of the drive. After simulating the heat transfer in the slider and resulting thermal deformation of the air-bearing surface, we fabricated a thermal actuator by thin film processing. The evaluation by a read/write tester showed a linear reduction in magnetic height as electric power was applied to the actuator. The actuator's stroke was 2.5 nm per 50 mW with time constant of 1 msec. We found no significant impact to the reliability of the read element.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b9870b89d7aeddc053e77132a0a9c2de https://doi.org/10.1299/kikaic.72.267 Zobrazit plný text záznamu