FLUX PINNING BY GRAIN BOUNDARIES IN SUPERCONDUCTING NIOBIUM-ZIRCONIUM ALLOYS

The influence of grain, subgrain, or dislocation cell size d or superconducting critical flux gradient dB/dr was investigated in a single phase Nb-33 at. % Zr alloy. By appropriate heat treatments, d was varied from 0.25 to 1500 μ. A monotonic decrease of more than one hundred-fold in dB/dr accompan...

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Veröffentlicht in:	Applied physics letters 1969-01, Vol.14 (8), p.250-252
Hauptverfasser:	Love, G. R., Koch, C. C.
Format:	Artikel
Sprache:	eng
Schlagworte:	GRAIN BOUNDARIES GRAIN SIZE HEAT TREATMENTS N32720 -Physics (Low Temperature)-Superconductivity NIOBIUM ALLOYS NIOBIUM ALLOYS AND SYSTEMS/Nb-Zr, flux pinning by grain boundaries in superconducting, (E) SUPERCONDUCTIVITY SUPERCONDUCTORS/flux pinning by grain boundaries in niobium-zirconium alloy, (E) ZIRCONIUM ALLOYS ZIRCONIUM ALLOYS AND SYSTEMS/Nb-Zr, flux pinning by grain boundaries in superconducting, (E)
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Zusammenfassung:	The influence of grain, subgrain, or dislocation cell size d or superconducting critical flux gradient dB/dr was investigated in a single phase Nb-33 at. % Zr alloy. By appropriate heat treatments, d was varied from 0.25 to 1500 μ. A monotonic decrease of more than one hundred-fold in dB/dr accompanied this thousand-fold increase in d. At a given d, the maximum increase in dB/dr obtained from precipitation of a second phase does not exceed a factor of about 30.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.1652801