Multilayer Nb-Ti for use as model superconducting microstructures

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Advances in Cryogenic Engineering

OSTI ID:482128

Warnes, W H; Faase, K J; Norris, J A ^[1]

---

1. Oregon State Univ., Corvallis, OR (United States)

Thin film deposition techniques provide opportunities to control the microstructure of two-phase alloy superconductors more completely than that possible by conventional metallurgical processing. The authors have fabricated thin film multilayer structures based on Nb-Ti alloy superconductors. The goal is to provide model microstructures that can be easily compared to flux-pinning theories of high-critical-current superconductivity. In this study, multilayer Nb/Ti materials have been annealed to provide samples with a variety of superconducting / normal interfaces, ranging from atomically sharp interfaces to heavily inter-diffused interfaces. Measurements of electrical and microstructural properties are described and compared with model predictions from proximity coupling theory and alloy diffusion.

• DOE Contract Number: FG06-93ER40804
• OSTI ID: 482128
• Report Number(s): CONF-950722--
• Journal Information: Advances in Cryogenic Engineering, Journal Name: Advances in Cryogenic Engineering Vol. 42B; ISSN 0065-2482; ISSN ACYEAC
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRICAL PROPERTIES
MICROSTRUCTURE
NIOBIUM ALLOYS
THIN FILMS
TITANIUM ALLOYS
VAPOR DEPOSITED COATINGS