10 GHz YBa2Cu3O7- deltasuperconducting ring resonators on NdGaO3substrates

Autor:	G J Valco, K B Bhasin, H Y To
Rok vydání:	1992
Předmět:	Laser ablation Materials science business.industry Metals and Alloys Condensed Matter Physics Microstrip Resonator Q factor Materials Chemistry Ceramics and Composites Optoelectronics Dissipation factor Dielectric loss Electrical and Electronic Engineering business Sheet resistance Microwave
Zdroj:	Superconductor Science and Technology. 5:421-426
ISSN:	1361-6668 0953-2048
DOI:	10.1088/0953-2048/5/7/002
Popis:	YBa2Cu3O(7-delta) thin films were formed on NdGaO3 substrates by laser ablation. Critical temperatures greater than 89 K and critical current densities exceeding 2 x 10(exp 8) Acm(sub -2) at 77 K were obtained. The microwave performance of films patterned into microstrip ring resonators with gold ground planes was measured. An unloaded quality factor six times larger than that of a gold resonator of identical geometry was achieved. The unloaded quality factor decreased below 70 K for both the superconducting and gold resonators due to increasing dielectric losses in the substrate. The temperature dependence of the loss tangent of NdGaO3 was extracted from the measurements.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::18b9aae6c19b7de1c232c72b8c7f5f4b https://doi.org/10.1088/0953-2048/5/7/002 Zobrazit plný text záznamu