Chalcogen, Kezsmarki

• Ba-Ca-Fe-O
• Ba-Co-Ge-O
• Cr-Fe-O
• Ba-S-V
• Cr-Ni-O
• optical properties
• magnetic properties
• phonons
• infrared spectra
• chalcogen
• transitional
• non-disordered
• ternary
• oxide
• orthorhombic
• cubic
• tetragonal
• trigonal
• hexagonal