Co-Ni-Fe write heads with a 10-μm yoke length for high-speed recording
| Autor: | Hiroaki Honjo, S. Saito, Tamaki Toba, Nobuyuki Ishiwata, Tsutomu Ishi, Yoshihiro Nonaka, Keishi Ohashi, Mikiko Saito |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Recording head
Materials science business.industry Frequency dependence Coercivity Omega Electronic Optical and Magnetic Materials law.invention Nuclear magnetic resonance Optics law Electrical resistivity and conductivity Eddy current Electrical and Electronic Engineering Magnetic force microscope business Yoke |
| Zdroj: | IEEE Transactions on Magnetics. 36:2514-2516 |
| ISSN: | 0018-9464 |
| DOI: | 10.1109/20.908490 |
| Popis: | We have developed a Co-Ni-Fe write head with a short yoke length for high-speed recording. By reducing the yoke length to 9.5 /spl mu/m, the eddy currents induced in a yoke with a relatively low resistivity (0.2 /spl mu//spl Omega/m) were reduced. The head of this short yoke had good write performance for a medium with a coercivity of 400 kA/m (5000 Oe) at frequencies up to 250 MHz (the overwrite less than -30 dB, and nonlinear transition shift less than 7%). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|