Ni-Zn-Co ferrite films prepared at 90/spl deg/C having /spl mu/´´=30 at 3 GHz

Author

Matsushita, Nobuhiro ; Nakamura, T. ; Abe, Makoto

Author_Institution

Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan

fYear

2002

Abstract

Summary form only given. Soft ferrite films usable in 1-3 GHz range are highly required for wave absorbers for EMC measures currently. We found that Ni-Zn ferrite films prepared by spin spray ferrite plating at 90/spl deg/C exhibited high real and imaginary parts of permeability, /spl mu/´ and /spl mu/´´, of about 30 at 1 GHz and the resonance frequency was as high as 1.2 GHz. This f/sub r/ was much higher than that of 130 MHz expected for bulk Ni-Zn ferrite sample with the same values of /spl mu/´. In this study, the addition of Co ions improved the plated Ni-Zn ferrite films in /spl mu/´, /spl mu/´´ and/or f/sub r/.

Keywords

cobalt compounds; ferrites; ferromagnetic resonance; magnetic permeability; magnetic thin films; nickel compounds; spray coatings; zinc compounds; (NiZnCo)Fe/sub 2/O/sub 4/; 1 GHz; 3 GHz; 90 degC; Ni-Zn-Co ferrite films; permeability; resonance frequency; spin spray ferrite plating; Current measurement; Electromagnetic compatibility; Ferrite films; Iron; Magnetic films; Permeability; Resonance; Resonant frequency; Spinning; Spraying;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International

Conference_Location

Amsterdam, The Netherlands

Print_ISBN

0-7803-7365-0

Type

conf

DOI

10.1109/INTMAG.2002.1000931

Filename

1000931