Title :
High-resolution measurement of temperature distribution in head coil and air bearing surface
Author :
Xu, Junguo ; Tokuyama, Mikio ; Kurita, Masayuki ; Maruyama, Youji
Author_Institution :
Mech. Eng. Res. Lab., Hitachi Ltd., Ibaraki, Japan
Abstract :
We have measured the temperature distribution in a head coil and air bearing surface at high-spatial resolution. It was found that an eddying current induced by high-frequency write-current significantly increases the temperature and also changes the temperature distribution. Measurement also revealed that an improved head structure would be a good way to reduce temperature increase and thermal protrusion in the head.
Keywords :
magnetic heads; temperature distribution; air bearing surface; eddy current; head coil; head structure; temperature distribution; Coils; Disk recording; Electrical resistance measurement; Magnetic heads; Magnetic recording; Surface resistance; Temperature distribution; Temperature measurement; Testing; Thermal expansion;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.816421
