Temperature Dependence of the Optical Transmission Edge inCd3(AsxP1−x)2Alloys

1972 ◽  
Vol 5 (2) ◽  
pp. 442-448 ◽  
Author(s):  
P. L. Radoff ◽  
S. G. Bishop
Keyword(s):  
Temperature Dependence ◽  
Optical Transmission ◽  
Transmission Edge

The temperature dependence of the electrical conductivity and switching phenomena in Cu2O single crystals

1982 ◽  
Vol 60 (11) ◽  
pp. 1648-1655 ◽  
Author(s):  
G. J. Wang ◽  
F. L. Weichman
Keyword(s):  
Electrical Conductivity ◽  
Temperature Dependence ◽  
Single Crystals ◽  
Electric Fields ◽  
Optical Transmission ◽  
Current Voltage ◽  
High Electric Fields ◽  
Optically Induced

Optical transmission work had shown that three distinct types of Cu2O single crystals could be created by means of different annealing processes. We have now made mobility measurements and a series of current–voltage measurements over the ambient to 200 °C range. All types of crystals were subject to breakdown at sufficiently high electric fields and temperatures in accordance with a previously known mechanism. Two new switching effeets, one of which is optically induced, are shown to exist in the highest resistivity material.

Temperature Dependence of the Critical Electron Dose for Fatty Acid Monolayers

1982 ◽  
Vol 40 ◽  
pp. 78-79
Author(s):  
Kenneth H. Downing ◽  
Robert M. Glaeser
Keyword(s):  
Electron Beam ◽  
Fatty Acid ◽  
Inelastic Scattering ◽  
Temperature Dependence ◽  
Structural Damage ◽  
Direct Result ◽  
Second Step ◽  
Strong Temperature Dependence ◽  
Electron Dose ◽  
Covalent Bonds

The structural damage of molecules irradiated by electrons is generally considered to occur in two steps. The direct result of inelastic scattering events is the disruption of covalent bonds. Following changes in bond structure, movement of the constituent atoms produces permanent distortions of the molecules. Since at least the second step should show a strong temperature dependence, it was to be expected that cooling a specimen should extend its lifetime in the electron beam. This result has been found in a large number of experiments, but the degree to which cooling the specimen enhances its resistance to radiation damage has been found to vary widely with specimen types.

Temperature Dependence of Magnetic Domains and Wall Structures

1972 ◽  
Vol 30 ◽  
pp. 496-497
Author(s):  
Sonoko Tsukahara ◽  
Tadami Taoka ◽  
Hisao Nishizawa
Keyword(s):  
Temperature Dependence ◽  
Domain Walls ◽  
Magnetic Domain ◽  
Iron Film ◽  
Objective Lens ◽  
Lorentz Microscopy ◽  
Domain Structures ◽  
Wall Structures ◽  
Crystal Films ◽  
Metallurgical Structure

The high voltage Lorentz microscopy was successfully used to observe changes with temperature; of domain structures and metallurgical structures in an iron film set on the hot stage combined with a goniometer. The microscope used was the JEM-1000 EM which was operated with the objective lens current cut off to eliminate the magnetic field in the specimen position. Single crystal films with an (001) plane were prepared by the epitaxial growth of evaporated iron on a cleaved (001) plane of a rocksalt substrate. They had a uniform thickness from 1000 to 7000 Å.The figure shows the temperature dependence of magnetic domain structure with its corresponding deflection pattern and metallurgical structure observed in a 4500 Å iron film. In general, with increase of temperature, the straight domain walls decrease in their width (at 400°C), curve in an iregular shape (600°C) and then vanish (790°C). The ripple structures with cross-tie walls are observed below the Curie temperature.

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