Authors
SX Wang, NX Sun, M Yamaguchi, S Yabukami
Publication date
2000/9/14
Journal
Nature
Volume
407
Issue
6801
Pages
150-151
Publisher
Nature Publishing Group UK
Description
The development of advanced electromagnetic devices has been constrained by a lack of soft magnetic materials with a suitably high saturation magnetization (over 20 kilogauss) and a large permeability roll-off frequency (greater than 1 gigaherz). For example, magnetic hard-disk-drive technology is rapidly approaching the perceived superparamagnetic limit at which the stored bits become thermally unstable — disks with higher anisotropy are more stable but are not usable because magnetic write heads become saturated. Here we describe a new soft magnetic material with a saturation magnetization of 24 kilogauss and a large permeability of 1,000–1,400 in a wide frequency range of up to about 1.2 gigaherz. This new material promises to have wide application in devices such as magnetic recording heads and integrated inductors.
Total citations
Scholar articles
SX Wang, NX Sun, M Yamaguchi, S Yabukami - Nature, 2000
SX Wang, NX Sun, M Yamaguchi, S Yabukami