Determination of the Gyrotropic Characteristics of Hexaferrite Ceramics From 75 to 600 GHz

Author

Yang, Bin ; Wylde, Richard J. ; Martin, Derek H. ; Goy, Philippe ; Donnan, Robert S. ; Caroopen, Sylvain

Author_Institution

Dept. of Electron. Eng., Queen Mary Univ. of London, London, UK

Volume

58

Issue

12

fYear

2010

Firstpage

3587

Lastpage

3597

Abstract

The work reported in this paper is in support of applications of ferrites in measurement systems operating at frequencies in the range 100-600 GHz. Measurements of the magneto-optical characteristics of selected grain-oriented hexaferrite ceramics from 75 to 600 GHz are described; a quasi-optical transmissometer driven by a multiband vector-network-analyser is used to provide the required high dynamic range, spectral-resolution, and scan-speeds. The implications of the results of the measurements are examined.

Keywords

ceramics; ferrites; magneto-optical effects; measurement systems; millimetre wave measurement; network analysers; optical rotation; submillimetre wave measurement; frequency 75 GHz to 600 GHz; grain-oriented hexaferrite ceramic; gyrotropic characteristics; magnetooptical characteristic; measurement system; millimeter-wave magnetooptics; multiband vector-network analyser; quasioptical transmissometer; spectral resolution; submillimetre-wave magnetooptics; Ceramics; Magnetic resonance imaging; Permittivity; Perpendicular magnetic anisotropy; Resonant frequency; Hexaferrites; millimeter-wave and submillimetre-wave magneto-optics; uniaxial gyrotropic materials;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/TMTT.2010.2086290

Filename

5624617