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  • Polymer and Materials Science  (9)
  • Inorganic Chemistry  (7)
  • PLASMA PHYSICS  (7)
  • 72.20  (2)
  • INSTRUMENTATION AND PHOTOGRAPHY  (2)
Collection
Keywords
Publisher
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  • 1
    Electronic Resource
    Electronic Resource
    Effect of temperature on the validity of the einstein relation in heavily doped semiconductors (1980)
    Springer
    Applied physics 23 (1980), S. 241-244 
    Details
    ISSN: 1432-0630
    Keywords: 72.20 ; 85.30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract An analytical expression of the modified form of the Einstein relation in heavily doped semiconductors in which Gaussian band tails are formed near the lower limit of heavy doping is derived for studying the temperature dependence of the diffusivity-mobility ratio of the carriers in such semiconductors. It is found that, with increasing temperature from relatively low values, the ratio first increases in a nonlinear manner and then decreases till, at high temperatures, it approaches its value corresponding to the non-degenerate condition resulting in a peak over a narrow range of temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00914906
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  • 2
    Electronic Resource
    Electronic Resource
    Oscillatory effective mass in degenerate narrow-gap semiconductors in a quantizing magnetic field (1981)
    Springer
    Applied physics 25 (1981), S. 105-108 
    Details
    ISSN: 1432-0630
    Keywords: 85.30 ; 72.20 ; 72.15
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract An attempt is made to study the effect of a quantizing magnetic field on the effective electron mass in degeneraten-type narrow-gap semiconductors at low temperatures. It is found, takingn-Hg1−x Cd x Te as an example, that the effective electron mass shows an oscillatory magnetic-field dependence as is expected because of the dependence of the effective mass in degenerate non-parabolic bands on Fermi energy which oscillates with changing magnetic field. The amplitude of oscillations is, however, found to be significantly influenced by the alloy composition whereas the period is found to be independent of the band non-parabolicity, i.e. of the compositional parameter in ternary semiconductors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00901280
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  • 3
    Electronic Resource
    Electronic Resource
    Hysteresis bei der Sol-Gel-Umwandlung (1930)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 194 (1930), S. 305-315 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19301940125
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  • 4
    Electronic Resource
    Electronic Resource
    Dialyse, Ultrafiltration und Koagulation von Molybdänsäure (1929)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 184 (1929), S. 135-144 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Aus unseren Versuchen über die Dialyse und Ultrafiltration einer Molybdänsäurelösung (aus Ammoniummolybdat und Chlorwasserstoff) lassen sich folgende Schlüsse ziehen: aFrisch hergestellte Molybdänsäurelösung enthält beträchtliche Mengen des gelösten Stoffes im Molekularzustand. 1,550 g Molybdänsäure in 100 cm3 Lösung enthielten 47,8% molekular gelöst, so daß sie nicht durch ein Ultrafilter zurückgehalten wurden.bDie Menge der molekular gelösten Molybdänsäure nimmt mit der Zeit ab.cEin Zusatz von Säure vermehrt die Menge der kolloiden Molybdänsäure, während ein Zusatz von Alkali sie vermindert.
    Additional Material: 16 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19291840110
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  • 5
    Electronic Resource
    Electronic Resource
    Verhalten von Kieselsäure, Vanadinsäure, Wolframsäure, Molybdänsäure, Antimonsäure und Tellursäure im Kolloidzustand (1930)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 190 (1930), S. 421-427 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19301900142
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  • 6
    Electronic Resource
    Electronic Resource
    Die Bildung der Gallerten von Vanadiumpentoxyd und anderen anorganischen Stoffen (1926)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 152 (1926), S. 399-404 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Feste durchsichtige Gallerten von Vanadiumpentoxyd lassen sich leicht herstellen durch Dialyse eines Sols von Vanadiumpentoxyd.Die Koagulation eines nicht dialysierten konzentrierten Sols von Vanadiumpentoxyd durch Elektrolyte führt zur Bildung einer Gallerte.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19261520142
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  • 7
    Electronic Resource
    Electronic Resource
    Peptisation und Bildung von komplexen Ionen (1926)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 152 (1926), S. 405-412 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Die Versuchsergebnisse zeigen, daß der Bildung von komplexen Ionen aus einer wenig löslichen Substanz (besonders in frisch gefällter Form) die Bildung eines Kolloides vorausgeht.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19261520143
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  • 8
    Electronic Resource
    Electronic Resource
    Zähigkeit und Gallertbildung von Cerihydroxyd-Sol (1927)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 164 (1927), S. 63-68 
    Details
    ISSN: 0863-1786
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1. Man erhält feste, durchsichtige Gallerten, wenn man zu einem Sol von Cerihydroxyd  -  hergestellt durch Dialyse einer Lösung von Ceriammoniumnitrat in der Kälte  -  Elektrolyte zusetzt. Die Gallertbildung findet nicht statt bei dem Sol desselben Stoffes, das in der Hitze hergestellt ist.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19271640104
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  • 9
    Electronic Resource
    Electronic Resource
    Study of polymer-polymer complex formation involving phenolic copolymer, non-ionic polymers, and polyelectrolytes (1991)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 184 (1991), S. 99-110 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Aus einem phenolischen Copolymeren bekannter Zusammensetzung und verschiedenen nicht ionischen Homopolymeren (PVP, PEO, PVA) sowie Polyelektrolyten wie PAA und PEI wurden in Lösung Mehrkomponenten-Interpolymerkomplexe hergestellt. Die Bildung dieser Komplexe wurde mit verschiedenen Methoden, wie Viskosimetrie, Potentiometrie, Konduktometrie und IR-Spektroskopie untersucht. Es wird ein Schema zur Erklärung der Art der Wechselwirkung zwischen den verschiedenen Polymerkomponenten vorgeschlagen.
    Notes: Multicomponent interpolymer complexes have been prepared by interacting a phenolic copolymer of known composition with several non-ionic homopolymers, e.g., PVP, PEO, PVA and polyelectrolytes, such as PAA and PEI. The formation of these complexes has been studied by several techniques, such as viscometry, potentiometry, conductometry, and IR spectra. A scheme has been presented to explain the mode of interaction of the various component polymers.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1991.051840109
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  • 10
    Electronic Resource
    Electronic Resource
    Study of three and four component intermacromolecular complexes involving acrylic copolymers, metal ions, and non-ionic polymers (1992)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 200 (1992), S. 1-13 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Poly(methacrylsäure-co-methacrylamid) und Poly(acrylsäure-co-acrylamid) wurden hergestellt und mit bekannten Methoden charakterisiert. Die jeweiligen Comonomereinheiten der beiden Copolymeren können durch Wasserstoffbrückenbindung und Ion-Dipol-Wechselwirkungen Komplexe bilden. Die nicht-komplexierten Einheiten der Intercopolymerkomplexe können noch entweder mit anderen Homopolymeren wie Poly(N-vinylpyrrolidon) oder Poly(oxyethylen) wechselwirken oder mit Übergangsmetallionen drei- und vierkomponentige Komplexe bilden. Die Bildung solcher Komplexe wurde mittels Viskosimetrie, Konduktometrie, Potentiometrie und IR- und UV-Spektroskopie untersucht.
    Notes: Poly(methacrylic acid-co-methacrylamide) and poly(acrylic acid-co-acrylamide) have been synthesized and characterized by known methods. The respective comonomer units of the two copolymers enter into complex formation through hydrogen bonding and ion-dipole interactions. The unreacted units in the intercopolymer complex also interact with homopolymers such as poly(N-vinylpyrrolidone) and poly(oxyethylene) as well as transition metal ions to form three and four component intermacromolecular complexes. Formation of these complexes could be shown through several experimental techniques, e.g. viscometry, conductometry, potentiometry, IR and UV spectrophotometry.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1992.052000101
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