Precision transmittance measurements on ferrites in millimeter waves

Author

Korolev, K.A. ; Chen, S. ; Afsar, M.N.

Author_Institution

Dept. of Electr. & Comput. Eng., Tufts Univ., Medford, MA, USA

fYear

2008

fDate

8-13 June 2008

Firstpage

536

Lastpage

537

Abstract

This paper presents transmittance spectra and complex magnetic permeability and dielectric permittivity parameters of pure and mixed powdered barium ferrites, nickel zinc manganese ferrites and nickel cobalt copper ferrites in a broad-band millimeter wave frequency range. A free space, millimeter wave magneto-optical approach has been successfully employed for precise characterization of ferrite materials. Frequency dependences of the magnetic permeability of ferrites have been calculated using Schlomann´s equation for partially magnetized ferrites.

Keywords

barium compounds; cobalt compounds; copper compounds; ferrites; magnetic particles; magnetic permeability; magneto-optical effects; manganese; millimetre wave spectra; nickel compounds; permittivity; zinc compounds; BaFe₁₂O₁₉; Ni_1-x-yCo_xCu_yFe_2-z-dMn_zO₄; Ni_1-xZn_xFe_2-yMn_yO₄; Schlomann equation; barium ferrites; broad-band millimeter wave frequency range; complex dielectric permittivity; complex magnetic permeability; free space magneto-optical approach; frequency dependence; millimeter wave magneto-optical approach; mixed powdered ferrites; nickel cobalt copper ferrites; nickel zinc manganese ferrites; partially magnetized ferrites; precision transmittance measurements; pure ferrites; Barium; Dielectric measurements; Ferrites; Frequency; Magnetic materials; Millimeter wave measurements; Nickel; Permeability; Permittivity measurement; Zinc;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on

Conference_Location

Broomfield, CO

Print_ISBN

978-1-4244-2399-6

Electronic_ISBN

978-1-4244-2400-9

Type

conf

DOI

10.1109/CPEM.2008.4574890

Filename

4574890