학술논문
Electrodynamic Properties of Single-Crystal and Thin-Film Strontium Titanate
Document Type
Conference
Author
Source
Conference: Ferroelectrics Workshop in Puerto Rico 1999 (FWPR-99), Guanica (PR), 05/13/1999--05/14/1999; Other Information: PBD: 13 May 1999
Subject
Language
English
Abstract
The authors present a comparative study of broadband electrodynamic properties of coplanar waveguides made from nonlinear dielectric single-crystal and thin-film SrTiO{sub 3} (STO) with high-temperature superconducting thin-film YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} electrodes. The waveguides that use single-crystal STO exhibit a monotonic increase in refractive index, dielectric nonlinearity, and dissipation with decreasing temperature (from 80 K to 20 K), whereas those based on thin-film STO show similar but weaker effects with increasing temperature. Under dc bias, both types of waveguides show reduced refractive index, but dissipation increases in the case of single-crystal STO, while it decreases in the case of STO thin-films.