Measurement of ferrites tensor permeability by spherical cavity resonator

Author

Okada, F. ; Tanaka, H.

Author_Institution

Dept. of Electr. Eng., Nat. Defense Acad., Yokosuka, Japan

fYear

1990

fDate

11-14 June 1990

Firstpage

230

Lastpage

231

Abstract

The authors describe the measurement of the microwave tensor permeability of a ferrite biased with a DC-magnetic field using a spherical cavity resonator. The principle of measurement, a practical spherical cavity, the measurement system, and the measurement results on YIG ferrite at 10 GHz are presented. The Q value of the spherical cavity is shown to be about 1.5-2 times higher than that of the rectangular or circular cavity resonator, making this cavity appropriate for precise measurements. Exact solutions can be obtained using this method. Using a spherical ferrite sample, the internal H/sub DC/ field is uniform and can be exactly calculated.<>

Keywords

cavity resonators; ferrites; magnetic permeability measurement; yttrium compounds; 10 GHz; DC-magnetic field; Q value; YFe5O12; YIG ferrite; ferrites tensor permeability; magnetic permeability; spherical cavity resonator; Cavity resonators; Dielectric measurements; Ferrites; Magnetic field measurement; Magnetic fields; Microwave measurements; Permeability measurement; Perturbation methods; Polarization; Tensile stress;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements, 1990. CPEM '90 Digest., Conference on

Conference_Location

Ottawa, Ontario, Canada

Type

conf

DOI

10.1109/CPEM.1990.110001

Filename

110001