Semiconducting glasses with flux pinning inclusions
AssigneeCalifornia Institute of Technology
InventorsWilliam L. Johnson, Siu-Joe Poon, Pol E. Duwez
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Abstract
A series of amorphous superconducting glassy alloys containing 1% to 10% by volume of flux pinning crystalline inclusions have been found to have potentially useful properties as high field superconducting magnet materials. The alloys are prepared by splat cooling by the piston and anvil technique. The alloys have the composition (TM).sub.90-70 (M).sub.10-30 where TM is a transition metal selected from at least one metal of Groups IVB, VB, VIB, VIIB or VIIIB of the Periodic Table such as Nb, Mo, Ru, Zr, Ta, W or Re and M is at least one metalloid such as B, P, C, N, Si, Ge or Al.
Claims8
Amorphous, superconducting, glassy alloys of the formula:
- (TM).sub.90-70 (M).sub.10-30
- where TM is a transition metal mixture selected from the group consisting of MORu, MoRe or MoNbRe and M is a metalloid selected from B, P, C and Si, said alloys containing a dispersion of 1% to 10% by volume of flux pinning, crystalline inclusions having a diameter from 25 angstroms to 2000 angstroms.
Dependencies are inferred from the claim text.