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Investigations on Cuprous Sulfide
J. Bruce Wagner,Carl Wagner +1 more
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In this paper, the activity of copper in cuprous sulfide as a function of the copper-to-sulfur ratio has been determined with the help of coulometric titrations.Abstract:
The activity of copper in cuprous sulfide as a function of the copper‐to‐sulfur ratio has been determined with the help of coulometric titrations. The homogeneity range of cuprous sulfide at 400°C extends from a copper‐to‐sulfur ratio of 1.9996±0.0002 for samples coexisting with metallic copper to a ratio of less then 1.93 for samples coexisting with digenite (Cu1.8S). The ratio of the effective mass of electron holes to that of the free electron has been found to be 7±2 at 435°C. Preliminary conductivity measurements suggest a considerable increase of the mobility of electron holes with an increasing copper deficit of the samples presumably due to fewer collisions of electron holes with excess electrons.read more
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Journal ArticleDOI
Electrical Conductivity Measurements on Cuprous Halides
J. Bruce Wagner,Carl Wagner +1 more
TL;DR: In this paper, the total electrical conductivity and electron hole conductivity in solid CuCl, CuBr, and CuI between 250 and 450°C were determined with help of ac measurements on samples between copper electrodes and dc polarization measurements on the cellCu|cuprous halide|graphite.
Journal ArticleDOI
On the Theory of Mixed Conduction with Special Reference to Conduction in Silver Sulfide Group Semiconductors
TL;DR: In this article, a macroscopic theory of mixed conduction with special reference to the conduction in silver sulfide group semiconductors is developed with the purpose of identifying the relative electrochemical potential of electrons and ions.
Journal ArticleDOI
Solid‐State Ionics: Roots, Status, and Future Prospects
Philippe Knauth,Harry L. Tuller +1 more
TL;DR: A review of the evolution of solid-state ionics over approximately the past 100 years is given in this article, with a brief history, introducing milestones of the development of this discipline, followed by a short summary of the theory of ionic conduction in the bulk and the more recently developed theory at interfaces, and the main technological applications, that is, batteries, solidoxide fuel cells, electrochemical sensors, electrochromic windows, and oxygen-separation membranes.
Journal ArticleDOI
Electrical Conduction and Phase Transition of Copper Sulfides
Kimihiko Okamoto,Shichio Kawai +1 more
TL;DR: In this paper, electrical conductivity measurements have been made on copper sulfide crystals of compositions ranging from Cu1.8S to Cu2.0S in the temperature region between 20°C and 220°C.
References
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Journal ArticleDOI
Electrical Conductivity Measurements on Cuprous Halides
J. Bruce Wagner,Carl Wagner +1 more
TL;DR: In this paper, the total electrical conductivity and electron hole conductivity in solid CuCl, CuBr, and CuI between 250 and 450°C were determined with help of ac measurements on samples between copper electrodes and dc polarization measurements on the cellCu|cuprous halide|graphite.
Journal ArticleDOI
Zur Elektronentheorie der Metalle auf Grund der Fermischen Statistik
TL;DR: In this paper, the authors discuss the Grundlagen der neuen Statistik, der Bose-Einsteinschen, the Fermi Diracschen, and the Bose Einsteenschen in etwas vereinfachter and erweiterter Form.
Journal ArticleDOI
Electrical Conductivity of Silver Sulfide
TL;DR: In this article, a method of measuring the ionic and electronic conductivities independently, as functions of the chemical potential ζ of the silver component, has been proposed, and the electronic conductivity is found to vary as expBζ both above and below the transition at 177°C.
Journal ArticleDOI
Investigations on Silver Sulfide
TL;DR: The variability of the Ag/S ratio in silver sulfide has been studied with the help of electrochemical measurements as mentioned in this paper, and it is shown that the variability of Ag2S at 160°C is of the order of 3×10−5 g−atom Ag/mole Ag 2S.
Journal ArticleDOI
The Computation of Fermi-Dirac Functions
J. McDougall,Edmund C. Stoner +1 more
TL;DR: In this paper, tables are given of the values of the basic integrals most frequently required, with a view to placing Fermi-Dirac statistics on as firm a numerical basis as is Maxwell-Boltzmann statistics.