Electrodynamic properties of single-crystal and thin-film strontium titanate
作者:
A.T. Findikoglu,
Q.X. Jia,
D.W. Reagor,
C. Kwon,
K.O. Rasmussen,
期刊:
Integrated Ferroelectrics
(Taylor Available online 2000)
卷期:
Volume 28,
issue 1-4
页码: 193-200
ISSN:1058-4587
年代: 2000
DOI:10.1080/10584580008222231
出版商: Taylor & Francis Group
关键词: nonlinear dielectric;strontium titanate;high-temperature superconductor;loss tangent;refractive index;large-signal regime
数据来源: Taylor
摘要:
We present a comparative study of broadband electrodynamic properties of coplanar waveguides made from nonlinear dielectric single-crystal and thin-film SrTiO3(STO) with high-temperature superconducting thin-film YBa2Cu3O7-δelectrodes. 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.
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