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  • 1965-1969  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 18 (1968), S. 106-111 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The external photoeffect was measured on AsI3, SbI3 and BiI3 crystals grown in the gaseous phase from very pure parent materials. The energy necessary for transferring an electron from the top of the valence band to the zero energy level was determined from the position of the long wave-length threshold of photoemission in the first approximation. This energy was approximately the same for all Vb metal iodide crystals, i.e. 5.8 eV. The electron affinities of crystals were determined from the known forbidden band width and from the results of measurements, and a simple band scheme of the crystals was proposed. The fine structure of the spectrum was successfully investigated on BiI3 crystals, from which it was possible to conclude the existence of exciton levels. Finally, the relations between the forbidden band width, the difference of the electronegativities corresponding to the various compounds and the melting point of AVBVII crystals were discussed.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Résumé On a développé un modèle de l'effet de Bauschinger dans des matériaux, contenant des héterogénités par utilisation de la théorie de distribution continue de dislocations sur un plan. On a aussi considéré l'effet de durcissement d' écronissage. On a calculé les pertes d' énergie par cycle de tension comme fonction de la tension maximale et on a fait une comparaison avec les études de fatigue de Lazan.
    Abstract: Zusammenfassung Ein Model des Bauschingereffekts in Werkstoffen mit Heterogenitäten wind erörtert under Benützung der Theorie der kontinuierlichen Verteilungen von Versetzungen in einer Ebene. Der Effekt der Arbeitsverfestigung wind betrachtet. Die Energieverluste pro Spannungszyklus werden als Funktion der Maximalspannung berechnet und mit den Dauerfestigkeitsbetrachtungen von Lazan verglichen.
    Notes: Abstract A model of the Bauschinger effect in materials containing heterogeneities is developed using the theory of continuous dislocation distributions on a plane. The effect of work hardening is considered. Energy losses per stress cycle are calculated as a function of maximum stress and a comparison is made with the fatigue studies of Lazan.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 18 (1968), S. 138-142 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The dependence of the photoelectric current on the wave-length was measured on SbSeI crystals in the temperature range of 83–293°K. The maximum of the internal photoeffect was found in the region of 720–740 nm for various crystals at room temperature. The temperature dependence of the forbidden band width of SbSeI crystals was deduced from the shift of the photoeffect maximum. The results were compared with the properties of homological compounds SbSI and BiSI.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 15 (1965), S. 536-538 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 18 (1968), S. 1465-1467 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
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