SQUID Sensors
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SQUIDs are the world's most sensitive detectors of magnetic flux with a field sensitivity as low as 10-15Tesla. DC SQUIDs are structures involving a
superconducting closed loop intercepted by two Josephson weak links. A
class 1000 superconducting device fabrication laboratory housing advanced
microfabrication facilities such as UHV thin film deposition, Photolithography,
Reactive Ion etching process etc. has been setup in MSG. Processes have
been standardized for fabrication of high quality Josephson junctions and
SQUID devices using Selective Niobium Etching Process (SNEP). Facilities
exist for rapid evaluation of I-V and V-Ø characteristic at 4.2K. The output
of DC SQUID sensor is linearized using a Flux locked loop electronics
developed indigenously. The SQUID sensors are being used to develop SQUID
based measurement systems such as SQUID Magnetometer, SQUID based set-
up for non-destructive Evaluation, SQUID based system for measurement of
biomagnetic fields etc.
Contact :
Mr. M.P.Janawadkar
Head, SQUIDs and Applications Section
Condensed Matter Physics Division
Materials Science Group
Indira Gandhi Centre for Atomic Research
Kalpakkam, Tamilnadu - 603 102, India
Tel : +91 44 27480500 (extn : 22776)
Fax : +91 44 27480081
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