Title :
Magnetic properties of FeCo multilayered films for single pole heads
Author :
Okada, Yasuyuki ; Hoshiya, Hiroyuki ; Okada, Tomohiro ; Fuyama, Moriaki
Author_Institution :
R&D Group, Hitachi Ltd., Kanagawa, Japan
fDate :
7/1/2004 12:00:00 AM
Abstract :
FeCo films multilayered with nonmagnetic NiCr and Cr thin films was investigated. [FeCo/NiCr]n multilayered films indicated a much lower remanent flux density and coercivity than the FeCo single-layered films. The [FeCo/Cr]n multilayered films showed antiferromagnetic coupling and a Ruderman-Kittel-Kasuya-Yoshida-like oscillating interaction, due to the flat interface between the FeCo and the Cr. We fabricated the single-pole-tip write heads with FeCo multilayered films and found that the heads with the antiferromagnetic coupling at the main pole suppressed the erase-after-write.
Keywords :
antiferromagnetic materials; iron alloys; magnetic flux; magnetic heads; magnetic multilayers; nickel alloys; remanence; FeCo-NiCr; Ruderman-Kittel-Kasuya-Yoshida-like oscillating interaction; antiferromagnetic coupling; coercivity; erase-after-write process; flat interface; magnetic properties; multilayered films; nonmagnetic NiCr; perpendicular recording; remanent flux density; single pole heads; single-layered films; single-pole-tip write heads; Antiferromagnetic materials; Chromium; Coercive force; Grain size; Iron; Magnetic films; Magnetic heads; Magnetic properties; Perpendicular magnetic recording; Soft magnetic materials; Antiferromagnetic coupling; FeCo multilayered films; erase-after-write; perpendicular recording;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.830176
