By Topic

Very high electrical resistivity and heteroamorphous structure of soft magnetic (Co35.6Fe50B14.4)-(SiO2) thin films

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

7 Author(s)
Munakata, M. ; Energy Electron. Lab., Sojo Univ., Kumamoto, Japan ; Motoyama, M. ; Yagi, M. ; Ito, T.
more authors

(Co35.6Fe50B14.4)-(SiO2) soft magnetic films with electrical resistivity of over 10000 μΩ · cm (1 × 10-4 Ωm) were fabricated on glass substrates by using synchronous triple-RF magnetron sputtering. The magnetic properties, high-frequency permeability characteristics, and microstructure of the films were investigated. Maximum electrical resistivity of about 115600 μΩ · cm (1.156 × 10-3 Ωm) was obtained with a large uniaxial anisotropy field Hk of about 250 Oe, a hard axis coercivity Hch of 5.6 Oe, and a saturated magnetization 4πMs of 8.3 kG. The real part of the relative permeability μ'r was about 50, which exhibited a good flat frequency dependence up to 2 GHz. The resonance frequency was higher than 3 GHz. It was found that the heteroamorphous films had soft magnetic properties with high resistivity of over 10000 μΩ · cm and high resonance frequency. The films are good candidates for core application in the gigahertz range.

Published in:

Magnetics, IEEE Transactions on  (Volume:38 ,  Issue: 5 )