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On the Dispersion of Resistivity and Dielectric Constant of Some Semiconductors at Audiofrequencies

C. G. Koops1951-07-01OpenAlex

Semiconducting ${\mathrm{Ni}}_{0.4}$${\mathrm{Zn}}_{0.6}$${\mathrm{Fe}}_{2}$${\mathrm{O}}_{4}$, prepared in different ways, has been investigated. It appeared that the ac resistivity and the apparent dielectric constant of the material show a dispersion which can be explained satisfactorily with the help of a simple m…

Multiferroics and related materialsMagnetic Properties and Synthesis of FerritesMagneto-Optical Properties and Applications

Über Kumulene IV; Oktaheptaene

Richard Kühn、H. Zahn1951-06-21Chemische Berichte

Abstract Triacetylen liefert mit Benzophenon und mit Fluorenon Oktatriin‐diole, deren Reduktion mit Phosphordijodid (P 2 J 4 ) + Triäthylamin zu Oktaheptaenen führt. Man erhält Lösungen eines violetten und eines blauen Kumulens, deren Absorptionsbanden beschrieben werden. Durch „Einbettung”︁ in kristallisiertes Benzop…

Supramolecular Self-Assembly in MaterialsPhotochromic and Fluorescence ChemistryPolydiacetylene-based materials and applications

Determination of Formal Oxidation Potentials of Ferric-Ferrous and Dichromate-Chromic Systems. Selection of Substituted 1,10-Phenanthroline Indicators for Determination of Iron at Low Acidity

G. Frederick Smith、Birgit Wallberg-Olausson1951-06-15Analytical Chemistry

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDetermination of Formal Oxidation Potentials of Ferric-Ferrous and Dichromate-Chromic Systems. Selection of Substituted 1,10-Phenanthroline Indicators for Determination of Iron at Low AcidityG. Frederick Smith and Birgit Wallberg-OlaussonCite this: Anal. Chem. 1951, 23, 6, 9…

Analytical chemistry methods developmentInorganic and Organometallic ChemistryThermal and Kinetic Analysis