Title :
Cavity perturbation measurement of dielectric and magnetic properties of ferrite materials in microwave frequency range
Author :
Lin, M. ; Afsar, M.N.
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;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.375467
