Dielectric properties of natural grown tourmaline at 100 GHz

Author

Scherer, Theo A. ; Meier, A. ; Landmann, A.

Author_Institution

Inst. fur Angewandte Mater. IAM-AWP, Assoc. EURATOM-KIT, Karlsruhe, Germany

fYear

2011

fDate

2-7 Oct. 2011

Firstpage

1

Lastpage

2

Abstract

CVD diamond is a well known excellent low loss material (tan δ = 0.55 · 10^-5) for microwave transmission e.g. in fusion reactors for the ECRH&CD system. Goal of our investigation is to find out other natural dielectric materials with even low loss tangent properties. Tourmaline is a complex structured natural mineral which grows in large crystals. A disk, sliced perpendicular to the c-axis of the crystal lattice, was used to determine the loss tangent and the dielectric constant in the 100 GHz frequency range.

Keywords

aluminium compounds; boron compounds; permittivity; silicon compounds; Al₆[(OH)₄(BO₃)₃Si₁₆O₁₈]; crystal lattice; dielectric constant; dielectric properties; frequency 100 GHz; fusion reactors; loss tangent; low loss material; microwave transmission; natural dielectric materials with; natural grown tourmaline; Crystals; Dielectric losses; Dielectric measurements; Frequency measurement; Lattices; Mirrors;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter and Terahertz Waves (IRMMW-THz), 2011 36th International Conference on

Conference_Location

Houston, TX

ISSN

2162-2027

Print_ISBN

978-1-4577-0510-6

Electronic_ISBN

2162-2027

Type

conf

DOI

10.1109/irmmw-THz.2011.6104883

Filename

6104883