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

Samuel A. Altebovitz; John A. Woollam

doi:10.1080/13642817808245343

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

Samuel A. Altebovitz, John A. Woollam

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Pinning forces in chemical-vapour-deposited (CVD) Nb₃Ge_1-xM_x 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 language	English (US)
Pages (from-to)	419-422
Number of pages	4
Journal	Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume	38
Issue number	4
DOIs	https://doi.org/10.1080/13642817808245343
State	Published - Oct 1978
Externally published	Yes

ASJC Scopus subject areas

Chemical Engineering(all)
Physics and Astronomy(all)

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10.1080/13642817808245343

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Applicability of scaling laws for superconducting critical currents in pseudo-binaries based on Nb₃Ge. / Altebovitz, Samuel A.; Woollam, John A.
In: Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties, Vol. 38, No. 4, 10.1978, p. 419-422.

Research output: Contribution to journal › Article › peer-review

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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.",

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note = "Funding Information: ACKWOWLEDGMENTS The authors would like to thank Drs. Engelhardt and Webb who supplied the samples, and Professor Kramer for a helpful discussion and for providing us with unpublished comments. Part of this work was done at the Francis Bitter National Magnet Laboratory, supported by the United States National Science Foundation.",

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

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