Learning Outcomes
With the successful course attendance the students are able:
-Το interpret and understand phenomena related with mass or charge transfer within crystalline materials
-To design the unit cell composition by estimating with accuracy the type and concentration of dominating point defects
-To read and understand Kroger-Vink diagrams
-To detect, depending on the conditions, the dominating point defect source in a material
Course Content (Syllabus)
Intrinsic and extrinsic point defects in oxides. Ionic point defect diagrams. Electronic defects. Intrinsic non stoichiometry. Extrinsic non stoichiometry. Brouwer diagrams for point defects. Applications in temperature sensors (possitive or negative coefficient), ionic conductors in fuel cells, gas sensors, humidity sensors, ohmic resistors, thermal elements, magnetic materials.
Keywords
point defects, defect chemistry, Brouwer diagrams, electronic ceramic materials
Additional bibliography for study
Defects and Transport in Crystalline Solids, Per Kofstad and Truls Norby, University of Oslo, 2007
Electroceramics, A.J. Moulson and J.M. Herbert, John Wiley & Sons, 2003
The Defect Chemistry of Metal Oxides, D.M. Smyth, Oxford University Press, 2000