Tetragonal, Transitional, Zukrowski

• Fe-K-Se-Tl
• Cu-Eu-Ge
• Cu-Lu-Si-Tm
• Cu-Eu-Si
• Fe-Li-P
• magnetic properties
• Moessbauer spectra
• isomer shift
• values of Moessbauer spectra
• thermal and thermodynamic properties
• transitional
• metal
• antiferromagnetic
• metalloid
• disordered