High permittivity SrTiO3 for the realization of all-dielectric metamaterials operating at terahertz frequencies was fabricated. A comparison of different processing routes evidences that Spark Plasma Sintering is the most effective sintering process to yield high density ceramic with high permittivity. We compare this sintering process with two others. The elaborated samples are characterized in the low frequency and in the terahertz frequency ranges. Their relative permittivities are compared with that a reference \sto single crystal. The permittivity of the sample elaborated by Spark Plasma Sintering is as high as that the single crystal.
@article{arxiv.1802.01485,
title = {High permittivity processed SrTiO3 for metamaterials applications at terahertz frequencies},
author = {Cyrielle Dupas and Sophie Guillemet-Fritsch and Pierre-Marie Geffroy and Thierry Chartier and Matthieu Baillergeau and Juliette Mangeney and Jean-Pierre Ganne and Simon Marcellin and Aloyse Degiron and Eric Akmansoy},
journal= {arXiv preprint arXiv:1802.01485},
year = {2025}
}