Title :
Mutual inductance and noise of high-Tc SQUIDs with flip-chip and integrated input coils
Author :
Ramos, Jaime ; Zakosarenko, Viatcheslav ; IJsselsteijn, Rob ; Schultze, Volkmar ; Meyer, Hans-Georg
Author_Institution :
Lucent Technol., Network Syst. GmbH, Nurnberg, Germany
fDate :
3/1/2001 12:00:00 AM
Abstract :
We investigated the mutual inductance and the noise of high-Tc superconducting quantum interference devices (SQUIDS) with flip-chip and integrated input coils. The dc SQUIDs are prepared on bicrystal substrates with misorientation angle of 30°. The number of turns of the input coils is varied between 5 and 25 turns. For 19-turn input coils, the mutual inductance is about 0.75 nH and 1 nH for the flip-chip and integrated SQUIDs, respectively. The spread in noise at 1 Hz is less than a factor of 2 for the flip-chip devices and about a factor of 5 for the integrated devices
Keywords :
SQUIDs; flip-chip devices; high-temperature superconductors; inductance; superconducting coils; superconducting device noise; 1 Hz; DC SQUID; bicrystal substrate; flip-chip device; high-Tc superconductor; input coil; integrated device; misorientation angle; mutual inductance; noise; Fabrication; Inductance measurement; Interference; Noise level; SQUID magnetometers; Superconducting coils; Superconducting device noise; Superconducting devices; Superconductivity; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
