Study of FeCo-SiO2 Granular Films for High Frequency Application

Author

Ge, S. ; Yao, D. ; Kim, K. ; Yang, X. ; Xi, L. ; Li, B.

Author_Institution

Lanzhou Univ., Lanzhou

fYear

2006

fDate

8-12 May 2006

Firstpage

131

Lastpage

131

Abstract

In this work, Fe₆₅Co₃₅ alloy which has maximum saturation magnetization (Ms) among all metal magnetic materials was chosen to make Fe₆₅Co₃₅-SiO₂ granular films, and the magnetic properties in whole composition were studied. The results show that good high frequency soft magnetic films were obtained by carefully controlling the microstructure. A serious (Fe₆₅Co₃₅)_x(SiO₂)_1-x granular films are fabricated by RF magnetron co-sputtering. X-ray diffraction shows that all samples have bcc structure of Fe₆₅Co₃₅ alloys. Transmission electronic microscope (TEM) image and the corresponding electronic diffraction (ED) pattern for a typical sample of x = 0.57 show that the sample consists of bcc Fe₆₅Co₃₅ particles embedded uniformly in insulating SiO₂ matrix. Magnetic hysteresis loops measured by vibrating sample magnetometer (VSM) shows that the samples have in plane uniaxial anisotropy, and anisotropy field is around 60 Oe.

Keywords

X-ray diffraction; cobalt alloys; crystal structure; electron diffraction; granular materials; high-frequency effects; iron alloys; magnetic anisotropy; magnetic hysteresis; magnetic thin films; metallic thin films; silicon compounds; soft magnetic materials; sputter deposition; transmission electron microscopy; ED; Fe₆₅Co₃₅-SiO₂; RF magnetron co-sputtering; TEM; VSM; X-ray diffraction; alloy granular films; bcc structure; electronic diffraction; high frequency soft magnetic films; magnetic hysteresis loops; metal magnetic materials; microstructure; saturation magnetization; transmission electronic microscopy; uniaxial anisotropy; vibrating sample magnetometer; Anisotropic magnetoresistance; Cobalt alloys; Frequency; Iron alloys; Magnetic films; Magnetic materials; Magnetic properties; Microstructure; Saturation magnetization; X-ray diffraction;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.375631

Filename

4261565