MEASUREMENTS OF DIELECTRIC-CONSTANT AND QUALITY FACTOR OF BA(MG1 3TA2/3)O-3 AT X-BAND FREQUENCIES/

Dielectric properties of Ba(Mg1/3Ta2/3)O-3 in forms of ceramic, single crystal fiber, and polyethylene composite at microwave frequencies we re measured. The dielectric constants 23.33, 24.30, and 26.50 and the quality factors 8,050, 6,430, and larger than 2,000 at 10 GHz were mea sured for the ceramic, hot pressed ceramic and the fiber respectively. The powder was studied by forming composites of Ba(Mg1/3Ta2/3)O-3 - P olyethylene. It is found that the experimental dielectric constant val ues at X band frequencies fit reasonably well to the logarithmic mixtu re rule. A newly reported mixing equation by Wakino et al. was studied by comparing with our experimental results.