Magnetoelastic thin films for high-frequency applications

Author

Ludwig, Alfred ; Löhndorf, Markus ; Tewes, Michael ; Quandt, Eckhard

Author_Institution

Center of Adv. Eur. Studies & Res., Bonn, Germany

Volume

37

Issue

4

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

2690

Lastpage

2692

Abstract

High-frequency magnetic thin films with cut-off frequencies well above 2 GHz and good magnetoelastic properties are key materials for the development of new magnetic devices such as remote-interrogated magnetoelastic sensors or micro-inductors. In order to achieve high cut-off frequencies the films must have high magnetization, high anisotropy field, moderate permeability and resistivity. Therefore, multilayered thin films consisting of the transition metal alloy Fe₆₀Co₆₀ and the amorphous soft magnetic alloy Co ₈₀B₂₀ have been developed which show cut-off frequencies higher than 2 GHz combined with good magnetoelastic properties

Keywords

boron alloys; cobalt alloys; electrical resistivity; iron alloys; magnetic anisotropy; magnetic multilayers; magnetic permeability; magnetic thin films; magnetisation; magnetoelastic effects; 2 GHz; Fe₆₀Co₆₀-Co₈₀B₂₀; Fe₆₀Co₆₀-Co₈₀B₂₀ multilayer; amorphous soft magnetic alloy; cut-off frequency; electrical resistivity; high-frequency magnetic device; magnetic anisotropy; magnetic permeability; magnetization; magnetoelastic thin film; micro-inductor; remote-interrogated magnetoelastic sensor; transition metal alloy; Amorphous magnetic materials; Cutoff frequency; Magnetic anisotropy; Magnetic devices; Magnetic films; Magnetic materials; Magnetic properties; Perpendicular magnetic anisotropy; Soft magnetic materials; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.951276

Filename

951276