germaniumplastic deformation/ electrical conductivitydislocation gridsn-Gedonor concentrationSamples of n-type germanium with a donor concentration N d =2.4×10 16 cm 3 are plastically deformed to a degree of strain equal to 18–40% to detect static conduction by electrons trapped on dislocations in...
The temperature dependence of electrical conductivity of single-crystal and polycrystalline high-purity germanium (HPGe) samples has been investigated in the temperature range from 7 to 100K. The conductivity versus inverse of temperature curves for three single-crystal samples consist of two distinct ...
The electrical conductivity of germanium vanadate glasses depends on the relative concentrations of V 4+ and V 5+ ions. It is found that by adding VCl 3 to the melt when the glass is formed, the added chlorine which acts as an oxidizing agent alters the ratio of concentration of vanadium ...
Electrical conductivity of germanium-substituted lithium ferrites of different compositions have been investigated as a function of composition and temperature. Plots of log(σT) versus 103/T are almost linear and have shown a transition near the Curie temperature. The activation energy in the ferromag...
Measurements have been made of the d.c. electrical conductivity 蟽 of amorphous germanium (a-Ge) films. These films were prepared by evaporation under a standard vacuum pressure of 10 Torr and were then exposed to air before being measured at 10 Torr. The temperature dependence of the ...
A study of the conductivity in the two-dimensional system formed near the (111) face of a germanium single crystal over the temperature interval from 1.2 to 4.2 K is presented. The method of preparation of the crystals is described, and the characteristics of the product are discussed. The ...
electrical conductivity at absolute zero; furthermore, conductivity increases with increasing temperature in a semiconductor, whereas it goes down with increasing temperature in a metal. Figure 2 shows a graph comparing the temperature variation of the electrical conductivity of a semiconductor (silicon) ...
The number of free electrons in a semiconductor is very few at ambient temperature. Where external energy i.e. increase in temperature can increase the number of free electrons. A semiconductor is the basis of modern electronics. The best examples of semiconductors are Germanium, Silicon, Gallium...
Small ions have a relatively high mobility of around 10−4 m2 V−1 s−1, and are more strongly influenced by electric fields than are other aerosol particles. The current flowing through the air is almost entirely due to these small ions, and the conductivity σ can be written as ...
We have studied the contact potential and electrical conductivity as a function of time for thin n- and p-type germanium samples immediately after their preparation; the measurements were made for different orientations of the surface. These results, and field effect studies, indicate the absence ...