Cavity perturbation measurement of dielectric and magnetic properties of ferrite materials in microwave frequency range

Author

Lin, M. ; Afsar, M.N.

fYear

2006

fDate

8-12 May 2006

Firstpage

1001

Lastpage

1001

Abstract

In this paper, complex permittivity and permeability of three types of YIG specimen and one nickel ferrite have been measured all in demagnetized state. The YIGs under measurement are 99.9% pure YIG (4piMs=1800plusmn5% Gauss), Aluminum-Substituted YIG (4piMs=1000plusmn5% Gauss) and Gadolinium-Substituted YIG (4piMs = 1200plusmn5% Gauss). Nickel ferrite has the magnetic saturation, 4piMs of 5000plusmn5% Gauss. Though quite a few methods have been developed for material permittivity and permeability measurement, the cavity perturbation technique has been implemented to carry out the measurement tasks here due to both simplicity and accuracy reasons.

Keywords

aluminium; ceramics; demagnetisation; ferrites; gadolinium; garnets; magnetic permeability; microwave materials; nickel compounds; permittivity; yttrium compounds; NiFe₂O₃; YFeO₁₂; YFeO₁₂:Al; YFeO₁₂:Gd; YIG; aluminum-substituted YIG; cavity perturbation measurement; demagnetized state; dielectric properties; ferrite materials; gadolinium-substituted YIG; magnetic properties; magnetic saturation; microwave frequency; nickel ferrite ceramics; permeability; permittivity; yttrium ion garnet ceramics; Dielectric materials; Dielectric measurements; Ferrites; Frequency measurement; Gaussian processes; Magnetic materials; Magnetic properties; Microwave frequencies; Microwave measurements; Permittivity measurement;

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.2006.375467

Filename

4262434