Influence of the magnetic field annealing on the extrinsic damping of FeCoB soft magnetic films

In order to investigate the high-frequency damping properties of the ferromagnetic film for the electromagnetic shielding applications, FeCoB films with the thickness of 200 nm were fabricated by the rf magnetron sputtering and subsequently annealed with a static in-plane magnetic field of 2000 Oe u...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 2010-10, Vol.108 (7)
Main Authors: Yang, Yi, Liu, Bailin, Tang, Dongming, Zhang, Baoshan, Lu, Mu, Lu, Huaixian
Format: Article
Language:English
Subjects:
ALLOYS
ANNEALING
BORON ALLOYS
COBALT ALLOYS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL STRUCTURE
DAMPING
DEPOSITION
ELECTROMAGNETIC RADIATION
FERROMAGNETIC MATERIALS
FREQUENCY DEPENDENCE
FREQUENCY RANGE
GHZ RANGE
HEAT TREATMENTS
IRON ALLOYS
MAGNETIC FIELDS
MAGNETIC MATERIALS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNONS
MATERIALS
MATERIALS SCIENCE
MICROSTRUCTURE
MICROWAVE RADIATION
PERMEABILITY
PHYSICAL PROPERTIES
QUASI PARTICLES
RADIATIONS
SPUTTERING
THIN FILMS
TRANSITION ELEMENT ALLOYS
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In order to investigate the high-frequency damping properties of the ferromagnetic film for the electromagnetic shielding applications, FeCoB films with the thickness of 200 nm were fabricated by the rf magnetron sputtering and subsequently annealed with a static in-plane magnetic field of 2000 Oe under a series of temperatures. The annealed films exhibit excellent soft magnetic and microwave loss properties. The local resonance from the multiphase microstructure and two-magnon scattering at anisotropy inhomogeneities make an additional contribution to the extrinsic damping of the films. As a result, the film annealed at 450 °C achieves a high full width at half maximum Δf up to 6 GHz for the imaginary part of the frequency-dependent permeability. These films could be novel candidates for the electromagnetic shielding applications.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.3489954