Magnesium Diboride Flexible Flat Cables for Cryogenic Electronics

Author

Yung, Chris S. ; Moeckly, Brian H.

Author_Institution

Supercond. Technol., Inc., Santa Barbara, CA, USA

Volume

21

Issue

3

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

107

Lastpage

110

Abstract

Magnesium diboride (MgB₂) thin films are a potential alternative to low-temperature superconductors (LTS) due to a higher critical temperature (Tc) of approximately 39 K. The reactive evaporation deposition technique also affords relatively simple growth of MgB₂ films on flexible substrates compared to high-temperature superconductors (HTS). We have designed and fabricated a cable architecture consisting of MgB₂ traces on flexible yttria-stabilized zirconia (YSZ) compatible with commercially available connectors or direct wirebonds. Key performance metrics such as critical current density (Jc) and Tc are measured and compared. We discuss thermal conductivity and passivation schemes for these cables.

Keywords

cables (electric); critical current density (superconductivity); cryogenic electronics; electric connectors; magnesium compounds; passivation; superconducting thin films; superconducting transition temperature; thermal conductivity; MgB₂; MgB₂ film growth; Y₂O₃-ZrO₂; cable architecture; connectors; critical current density; critical temperature; cryogenic electronics; direct wirebonds; flexible flat cables; flexible substrates; flexible yttria-stabilized zirconia; low-temperature superconductors; magnesium diboride thin films; passivation schemes; reactive evaporation deposition technique; thermal conductivity; Conductivity; Connectors; High temperature superconductors; Printed circuits; Substrates; Temperature measurement; Thermal conductivity; ${rm MgB}_{2}$; Cryogenic electronics; interconnections; superconducting devices; superconducting thin films;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2010.2080655

Filename

5613217