Electron Diffraction Patterns

Quasicrystal






Structural investigation of stable quasicrystals
High-resolution transmission electron microscopy in combination with further electron microscopy techniques is employed for the structural characterisation of quasicrystalline alloys such als icosahedral and decagonal Al-Mn-Pd as well as decagonal Al-Co-Ni. These investigations are in collaboration with several research groups especially with Dr. R. Lück at the Max Planck Institute for Metals Research in Stuttgart, Germany, and Dr. S. Ritsch at the Institute for Materials Research of Tohoku University, Sendai, Japan.












isohedral quasicrystal found in Al-Mn Al-Mn-Si Al-Li-Cu * Al-Pd-Mn * Al-Cu-Fe Al-Mg-Zn
Zn-Mg-RE * (RE=La,Ce,Nd,Sm,Gd,Dy,Ho,Y) Ti-TM (TM=Fe, Mn, Co, Ni) Nb-Fe V-Ni-Si Pd-U-Si
picture from http://www.jcrystal.com/steffenweber/qc.html