TEACHING CRYSTALLOGRAPHY FOR PHYSICS STUDENT IN EGYPT. Karimat El-Sayed, Physics Department, Ain Shams University, Cairo, Egypt

The contents of the crystallography courses given for the undergraduate and post graduate physics students in Egypt are going to be discussed in theis talk. The design of the contents of the undergraduate course were based on the needs of other solid state physics courses: the students for example has to understand: l) the reason for anisotropy in the physical propeties of some materials, 2) the reason for the great difference in the physical and mechanical properties between diamond and graphite, although they have the same chemical composition, 3) the mechanisms which produce intrinsic and extrinsic physical properties and the difference between them, 4) the mode of defects formation such as the point defects, dislocation and stacking faults, 5) to know the difference between, crystalline, poly crystalline and amorphous materials. All these items listed above can only be explained in term of structure.

The contents of the post graduate course (Master degree) are an extension of the undergraduate course and the contents were also designed in order to serve the need of the students. The powder and electron diffraction techniques are adopted in this course for the purpose of characterizing and extracting the microstructural parameters from materials having either intrinsic or extrinsic properties. Those techniques are also applied for: lattice and super lattice detection, phase identification and degree of disordering in disordered materials.