Applicability of scaling laws for superconducting critical currents in pseudo-binaries based on Nb3Ge

Samuel A. Altebovitz, John A. Woollam

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Pinning forces in chemical-vapour-deposited (CVD) Nb3Ge1-xMx pseudo-binaries, where M = Ga or Sn, and 0≤x≤0·02, have been measured as a function of the reduced field. An absence of scaling of the flux-pinning-force density with reduced field is attributed to sample inhomogeneity. The reduced field is re-defined in a way that excludes the very-high-field-critical-current behaviour. Pinning forces as a function of this re-defined field obey a universal scaling law, i.e. the same function describes the normalized pinning for all temperatures and samples.

Original languageEnglish (US)
Pages (from-to)419-422
Number of pages4
JournalPhilosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume38
Issue number4
DOIs
StatePublished - Oct 1978

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Flux pinning
Scaling laws
Critical currents
scaling laws
critical current
Vapors
flux pinning
Temperature
inhomogeneity
vapors
scaling
temperature

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy(all)

Cite this

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AU - Woollam, John A.

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AB - Pinning forces in chemical-vapour-deposited (CVD) Nb3Ge1-xMx pseudo-binaries, where M = Ga or Sn, and 0≤x≤0·02, have been measured as a function of the reduced field. An absence of scaling of the flux-pinning-force density with reduced field is attributed to sample inhomogeneity. The reduced field is re-defined in a way that excludes the very-high-field-critical-current behaviour. Pinning forces as a function of this re-defined field obey a universal scaling law, i.e. the same function describes the normalized pinning for all temperatures and samples.

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