Examples of Functional Materials with Different Defect Structures

The concentrations of electrons and holes depend on the external thermodynamic parameters, such as T and Po2, and may often be widely varied within the phase stability limits. Equations (3.37) and (3.48) presented such dependencies at a constant temperature, but at relatively high and low oxygen pressures these concentrations can be expressed as 

By combining Equations (3.129) and (3.130) with Equation (3.127), it is possible to obtain the dependencies of the Seebeck coefficient on the oxygen partial pressure. 

The isothermal dependencies of electronic conductivity and Seebeck coefficient on the oxygen pressure, along with the corresponding defect concentrations, are shown in Eigure 3.10. 

Examples of Functional Materials with Different Defect Structures 

When considering electrical properties from a general point of view, all solids may be divided in two major groups, namely conductors and insulators. 

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Examples of Functional Materials with Different Defect Structures 69 When both contributions are significant... 

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