Observations of flux motion in niobium films

Conference · Fri Mar 01 00:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5901509

Xiao, Y M; Keiser, G M ^[1]

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1. Stanford Univ., CA (United States). W.W. Hansen Labs. of Physics

In this paper magnetic field trapped in a superconducting sphere is examined at temperatures from 4.6 K to 5.5 K The sphere is the rotor of a precision gyroscope, and is made of fused quartz and coated with a sputtered niobium film. The rotor diameter is 3.8 centimeters. The film thickness is 2.5 micrometers. The tests are carried out at ambient magnetic field of about 1 milligauss. Unexpected instability of the trapped field is observed. The experimental results and possible explanations are presented.

• OSTI ID: 5901509
• Report Number(s): CONF-900944-; CODEN: IEMGA
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Vol. 27:2; Conference: 1990 applied superconductivity conference, Snowmass, CO (United States), 24-28 Sep 1990; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ROTORS
MAGNETIC FIELD CONFIGURATIONS
SUPERCONDUCTING FILMS
MAGNETIC FLUX
EXPERIMENTAL DATA
FILMS
GYROSCOPES
NIOBIUM
QUARTZ
DATA
ELEMENTS
INFORMATION
METALS
MINERALS
NUMERICAL DATA
OXIDE MINERALS
TRANSITION ELEMENTS
665412* - Superconducting Devices- (1992-)