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An Empiricism for Establishing the Transition Temperatures of Superconducting Alloys and Compounds
Author(s) -
Gold L.
Publication year - 1964
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19640040205
Subject(s) - tungsten , stoichiometry , superconductivity , empiricism , materials science , transition metal , condensed matter physics , thermodynamics , chemistry , physics , metallurgy , organic chemistry , epistemology , philosophy , catalysis
The synthesis of new superconductive alloys may be guided by a form of empiricism based upon the isotope law. For a series of alloys having a common structure, the critical temperatures of its members are presumed so interrelated. The reduced mass of a compound becomes somewhat obscure for stoichiometry other than 50 to 50 atomic percent. Several possible definitions of reduced mass permit setting of upper and lower bounds on the transition point in general. Theoretical calculations are presented for Nb 3 In with evidence that the experimental values for this substance and Nb 3 Ga may require slight revision. In line with the quest for alloys with higher critical temperatures than Nb 3 Sn, a prediction is made that Nb 3 Si (were it to exist and be of the β‐tungsten structure) would be a promising prospect.