Measurements of the Dielectric Constant of BaTiO3 Single Crystals in the Paraelectric Region at X Band

Abstract

The dielectric constant and loss tangent of single crystals of BaTiO₃ were measured as a function of temperature in the frequency range of 8.2 to 12.4 kMc. The technique consisted of looking for transmission resonances through the crystal whenever its thickness became λ/2 (where λ is the wavelength in the material). From the Curie‐Weiss behavior of the dielectric constant in the paraelectric region, the A constant was determined to be 3.77×10⁻⁵°C⁻¹.