1. 1 Pure Metals   increases linearly with increasing temperature  For T  0:   constant Theory Matthiessen's rule

2. 2 Alloys

3. Impurities and Dislocations 3 Molybdenum D. Rafaja, H. Köstenbauer, U. Mühle, C. Löffler, G. Schreiber, M. Kathrein, J. Winkler: Effect of the deposition process and substrate temperature on the microstructure defects and electrical conductivity of molybdenum thin films, Thin Solid Films 528 (2013) 42-48.

4. 4 Atomic Ordering in Alloys

5. 5 Atomic Ordering in Au-Cu X-ray diffraction – additional diffraction lines AuCu, P4/mmmAuCu 3, Pm3mAu 3 Cu, Pm3m Au-Cu, Fm3m

6. 6 Electrical Conductivity of Er(Co 1-x Ge x ) 2 S. Daniš, P. Javorský, D. Rafaja and V. Sechovský: Low-temperature transport and crystallographic studies of Er(Co 1-x Si x ) 2 and Er(Co 1-x Ge x ) 2, J. Alloys Comp. 345 (2002) 54-58.

7. 7 Lattice Parameter of Er(Co 1-x Si x ) 2 S. Daniš, P. Javorský, D. Rafaja and V. Sechovský: Low- temperature transport and crystallographic studies of Er(Co 1-x Si x ) 2 and Er(Co 1-x Ge x ) 2, J. Alloys Comp. 345 (2002) 54-58. ErCo 2 Cubic structure (Fd3m)  Rhombic deformation  Magnetic ordering  Change in resistance 33 K

8. 8 Crystal Structure of ErCo 2 {111} direction Co Er ErCo 2, SG: Fd3m Er (8a): (0,0,0) Co (16d): (5/8, 5/8, 5/8)

9. 9 Kondo Effect electrical resistivity,  cm Spin contribution: J. Kondo: Prog. Theor. Phys. 32 (1964) 37. alloys: Cu, Ag, Au, Mn, Zn doped with: Cr, Mn, Fe phononsspin Deviation from Matthiessen's rule electrical resistivity,  cm