Bi-2223 Magnetic Shields
|
Superconducting ceramic tubes and vessels with hemispherical bottom are suitable for perfect shielding of AC/DC magnetic field, e.g. in devices equipped by SQUIDs used in medicine, biomagnetism, nondestructive testing, physics etc. The shields may be supplied in custom made shapes.
Material: Bi1.8Pb0.26Sr2Ca2Cu3O10+x (2223 phase) Density: > 5.0 g/cm3 Wall thickness: approx. 1.5 mm Shielded magnetic flux density (77 K): > 5 mT (typical value 10 mT) Shielding factor (77 K, amplitude 2 mT, frequency 20 Hz – 10 kHz): > 10^6 Shielding effectiveness (77 K, amplitude 2 mT, frequency 20 Hz – 10 kHz): > 120 dB Field noise at 1 Hz (cooled at 77 K in zero field): < 50 fT/sqrt(Hz) Critical temperature - zero resistivity: 108 K Critical temperature - midpoint: 110 K 
| ||
|
Tubes
CST-10/80 CST-12/80 CST-15/80 CST-18/120 CST-21/120 CST-22/120 CST-24/120 CST-28/140 |
Inner Diameter
10 mm 12 mm 15 mm 18 mm 21 mm 22 mm 24 mm 28 mm |
Length
80 mm 80 mm 80 mm 120 mm 120 mm 120 mm 120 mm 140 mm |
|