Calculation of shape anisotropy for micropatterned thin Fe-Ni films for on-chip RF applications

Author

Vroubel, Marina ; Zhuang, Yan ; Rejaei, Behzad ; Burghartz, Joachim N. ; Crawford, Ankur M. ; Wang, Shan X.

Author_Institution

Lab. of Electron. Components, Delft Univ. of Technol., Netherlands

Volume

40

Issue

4

fYear

2004

fDate

7/1/2004 12:00:00 AM

Firstpage

2835

Lastpage

2837

Abstract

We present a self-consistent calculation of the effective anisotropy of patterned, integrated ferromagnetic films. For comparison, experimental data were obtained from electroplated thin (0.5 μm) Ni-Fe films with different patterns. The effective anisotropy of patterned samples was increased by shape demagnetizing effects from just 10 Oe up to 100 Oe. The samples with suitable characteristics were subsequently used as cores for on-chip inductors and microstrips.

Keywords

demagnetisation; ferromagnetic materials; iron alloys; magnetic anisotropy; magnetic permeability; magnetic thin films; microstrip circuits; nickel alloys; thin film inductors; Fe-Ni; RF applications; electroplated thin films; integrated ferromagnetic films; magnetic anisotropy; magnetic permeability; magnetic thin films; microstrips; on-chip inductors; shape anisotropy; shape demagnetizing effects; Anisotropic magnetoresistance; Demagnetization; Magnetic anisotropy; Magnetic films; Magnetic resonance; Magnetization; Perpendicular magnetic anisotropy; Radio frequency; Shape; Thin film inductors; Demagnetization; magnetic anisotropy; magnetic permeability; magnetic thin films;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2004.835096

Filename

1325658