Transcription of Electrical Resistivity as a Function of Temperature
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Electrical Resistivity as a Function of Temperature
Department of Chemical Engineering and Materials ScienceMike MeierUniversity of California, DavisSeptember 13, 2004(1)(2)(3) Electrical Resistivity AS A Function OFTEMPERATUREI ntroductionThe ability of materials to conduct electric charge gives us the means to invent an amazing array ofelectrical and electronic devices, especially considering the extraordinarily wide range ofconductivity available, with insulators on one end and superconductors on the other. (Semi-conductors, thermoelectric materials, opto-electronic materials and magneto-resistive materials arewhole other matters) Between these extremes are materials which offer a small degree of resistanceto flow of electrons, such as ordinary copper wire used in household wiring, nichrome heater wireused in toasters and ovens, and many other useful materials.
(5) For pure elements the contribution of defects is on the order of 0.1 percent of the total but for heavily cold worked metals it can be as high as 5 percent.
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