NDLI: New substrates for HTSC microwave devices

Content Provider	IEEE Xplore Digital Library
Author	Tidrow, S.C. Tauber, A. Wilber, W.D. Lareau, R.T. Brandle, C.D. Berkstresser, G.W. Ven Graitis, A.J. Potrepka, D.M. Budnick, J.I. Wu, J.Z.
Copyright Year	2002
Abstract	A new substrate material LSAT, a 30/70 mole % solid solution between LaA10₃ and Sr₂AITaO₆, has been prepared for the purposes of eliminating twinning, strain and non-isotropic microwave properties found in pure LaA10₃ substrates. At 300 K and 30/70 mole %, LSAT is cubic with lattice parameter of 7.737 Å. The dielectric properties of single crystal LSAT (30/70 mole %) substrates have been measured at 10 GHz and 300 K and determined to be: dielectric constant ε=22.5; and, loss tangent tan(δ) ⩽ 10^-3. High quality c -axis oriented high critical temperature superconducting (HTSC), YBa₂Cu₃0_7-δ (YBCO), thin films have been deposited on (001) single crystal LSAT substrates. The crystal quality of these films is excellent as evidenced by the full width half maximum (FWHM) rocking curve widths of typically 300 arc-seconds. Critical current densities (as measured using magnetization) are about 4 × 10⁶ A/cm² at 10 K. Microwave film properties include an onset transition temperature (T_c) higher than 91 K, transition width (ΔT_c) less than 5 K, surface resistance R_S lower than copper (30 mω) at 85 K and 35 GHz for a film of thickness 2500 Å.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	1766
Ending Page	1768
Page Count	3
File Size	347244
File Format	PDF
ISSN	10518223
Volume Number	7
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microwave devices Superconducting microwave devices Dielectric substrates Dielectric loss measurement Superconducting transition temperature Copper Surface resistance Solids Strontium Capacitive sensors
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Dielectric properties of perovskite antimonates

High-temperature superconductive devices on sapphire

Microwave power handling capability of HTS superconducting thin films: weak links and thermal effects induced limitation

Microwave surface resistance of cuprate superconductors

Sensitive measurement of the surface impedance of superconducting single crystals using a sapphire dielectric resonator

Microwave surface resistance of reactively sputtered NbN thin films

High-temperature superconductor resonators and phase shifters

Surface resistance and nonlinear dynamic microwave losses of epitaxial HTS films

Sensitivity of R/sub s/-measurement of HTS thin films by three prime resonant techniques: cavity resonator, dielectric resonator, and microstrip resonator

New substrates for HTSC microwave devices

Similar Documents

Dielectric properties of perovskite antimonates

High-temperature superconductive devices on sapphire

Microwave power handling capability of HTS superconducting thin films: weak links and thermal effects induced limitation

Microwave surface resistance of cuprate superconductors

Sensitive measurement of the surface impedance of superconducting single crystals using a sapphire dielectric resonator

Microwave surface resistance of reactively sputtered NbN thin films

High-temperature superconductor resonators and phase shifters

Surface resistance and nonlinear dynamic microwave losses of epitaxial HTS films

Sensitivity of R/sub s/-measurement of HTS thin films by three prime resonant techniques: cavity resonator, dielectric resonator, and microstrip resonator

New substrates for HTSC microwave devices