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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Kondo, K. Chiba, T. Ando, S. Yoshida, S. Shimada, Y. Nakamura, T. Matsushita, N. Abe, M. |
| Copyright Year | 1965 |
| Abstract | As the material for realizing gigahertz conducted noise suppressors, Ni-Zn-Co ferrite films (Ni/sub 0.15-0.21/Zn/sub 0.20-0.36/Co/sub x/Fe/sub 2.39-2.58/O/sub 4/, x=0-0.10) were deposited from an aqueous solution by spin spray ferrite plating at 90/spl deg/C. We applied 1.3-kOe bias field parallel to the centrifugal direction of liquid flow on the substrate. The bias field and the Co addition induced an in-plane uniaxial anisotropy with easy axis parallel to the liquid flow (or bias field) direction. The effect was strongest at x=0.03; the complex permeability (/spl mu/=/spl mu/'-j/spl mu/'') along the hard axis exhibited a high-natural ferromagnetic resonance of f/sub r/=1.4 GHz and a strong magnetic loss of /spl mu/''>30 in a wide range between 300 MHz and 3 GHz. Measured along the easy axis, however, /spl mu/' and /spl mu/'' were negligibly small, indicating that the high permeability with strong loss was ascribed to magnetization rotation, with no contribution from domain motion. Cole-Cole impedance (0.1 Hz-1 MHz) plots for each Ni-Zn-Co ferrite film were fitted by a depressed semicircle, whose relaxation angle became largest at x=0.03. This means that the relaxation time in conduction process is most widely dispersed at the same Co content where, as mentioned above, the magnetic loss became strong in a wide frequency range. |
| Sponsorship | IEEE Magnetics Society |
| Starting Page | 3130 |
| Ending Page | 3132 |
| Page Count | 3 |
| File Size | 501105 |
| File Format | |
| ISSN | 00189464 |
| Volume Number | 39 |
| Issue Number | 5 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-09-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Impedance Magnetic analysis Spraying Ferrite films Magnetic losses Magnetic anisotropy Perpendicular magnetic anisotropy Fluid flow Permeability Magnetic resonance |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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