Measurement of Permittivity of Mixed Barium and Strontium Titanate in 3,000 Mc/s Region

抄録

The permittivity of ferroelectric substance was measured in a microwave region by two methods, namely, by observing the resonances of a sample inserted either in a water-filled cavity resonator or in a wave guide window. By the two methods its temperature dependence of (Ba:80%, Sr:20%)TiO₃, its frequency dependence in a region between 2,200 Mc/s and 3,500 Mc/s, and the permittivities for several constitutions of barium and strontium, were measured. The results indicate the existence of a dispersion in this frequency region.