Figure 4
From: High permittivity processed SrTiO3 for metamaterials applications at terahertz frequencies
PH model of the dielectric response of SrTiO3 between 102 and 1014 Hz: εr (ω) = \({\varepsilon }_{r}^{^{\prime} }\) + i\({\varepsilon }_{r}^{^{\prime \prime} }\) (\({\varepsilon }_{r}^{^{\prime \prime} }\) = tan δ × \({\varepsilon }_{r}^{^{\prime} }\)) and measurements in the low frequency (100 Hz–1 MHz) and the THz frequency ranges of SPS sample (green and yellow-green points). Inset: zoom between 0.3 and 0.9 THz.
