NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

Development of Low Cost (Sr,Ca)3Al2O6 Dielectrics for Bi2Sr2CaCu2O8+δ Applications

Published

Author(s)

T J. Haugan, Winnie K. Wong-Ng, Lawrence P. Cook, Richard G. Geyer, H J. Brown, L Swartzendruber, James A. Kaduk

Abstract

The development of low-cost (Sr,Ca)3Al2O6 dielectrics for Bi2Sr2CaCu2O8+d superconductor applications was investigated. The (Sr,Ca)3Al2O6 phase was determined to be inert to Bi2Sr2CaCu2O8+d with extended high temperature subsolidus annealing, and also during non-equilibrium melting conditions. Addition of up to 25 volume % of (Sr,Ca)3Al2O6 to Bi2Sr2CaCu2O8+d powders had small or neglible effect on the Tc and superconducting volume percentage of the 2212 phase. The dielectric properties of (Sr = 1.0 to 2.5) members of solid-solution (Sr,Ca)3Al2O6 were measured at 77 K and 300 K in the range of 10 to 11 Ghz for cylindrical samples using resonant system methods. The dielectric constant er was from 9.7 to 13.2, and the loss tangent tan(d) was 3 x10-4 to 8 x 10-4.
Citation
IEEE Transactions on Applied Superconductivity
Volume
11
Issue
No. 1
Pub Type
Journals

Keywords

(Sr, Ca)<sub>3</sub>Al<sub>2</sub>O<sub>6</sub>, Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8+&#948;</sub>, dielectric constant and loss tangent, phase compatibility
Biomaterials and Ceramics

Citation

Haugan, T. , Wong-Ng, W. , Cook, L. , Geyer, R. , Brown, H. , Swartzendruber, L. and A., J. (2001), Development of Low Cost (Sr,Ca)<sub>3</sub>Al<sub>2</sub>O<sub>6</sub> Dielectrics for Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8+&#948;</sub> Applications, IEEE Transactions on Applied Superconductivity (Accessed October 24, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created March 1, 2001, Updated February 19, 2017
Was this page helpful?