✦ LIBER ✦

Hysteresis losses in fine filament internal-tin superconductors

✍ Scribed by R.B. Goldfarb; J.W. Ekin

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 374 KB
Volume: 26
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(86)90098-6

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✦ Synopsis

Hysteresis losses were measured on a series of fine filament Nb3Sn superconductors made by the internal-tin process. Hysteresis was measured as a function of filament diameter and interfilament separation using a vibrating sample magnetometer in transverse magnetic field. Losses were greater than expected from the critical state model that expresses loss as a function of filament diameter. Micrographs of the reacted wire cross-sections showed some interfilament bridging for all wires. This gave rise to effective filament diameters that were greater than actual diameters. The critical interfilament separation, above which the losses would be expected to follow the critical state model, was determined.

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