Title :
Transient time measurement of head magnetic field by using electron beam tomography
Author :
Nakamura, Kimio ; Maruyama, Youji ; Suzuki, Hiroshi ; Itoho, Kenichi ; Takano, Hisashi
Author_Institution :
Central Res. Lab., Hitachi Ltd., Kokubunji, Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
Waveforms of the magnetic field from magnetic recording heads were measured by using an electron-beam tomography system. In addition, the relationship between the magnetic field transition and the current transition was investigated. The magnetic field transition of a recent head with a high Bs type core almost follows the current transition. To develop a high-speed transition head, it is very important to improve the current response
Keywords :
eddy current losses; electron beam testing; magnetic cores; magnetic field measurement; magnetic heads; magnetic thin film devices; tomography; current transition; electron beam tomography; head magnetic field; high Bs type core; magnetic field transition; magnetic recording heads; transient time measurement; Circuits; Disk recording; Electron beams; Magnetic field measurement; Magnetic fields; Magnetic heads; Magnetic recording; Spatial resolution; Time measurement; Tomography;
Journal_Title :
Magnetics, IEEE Transactions on
