Kemmler sack, Oxide, Quaternary

• Fe-O-Pb-Sr
• Fe-O-W-Y
• Bi-Fe-Nb-O
• Ba-Cu-O-Y
• Ba-Co-Ir-O
• structural properties
• magnetic properties
• electronic and electrical properties
• Moessbauer spectra
• conductivity or resistivity
• oxide
• quaternary
• chalcogen
• transitional
• alkaline
• cubic
• trigonal
• hexagonal
• orthorhombic
• tetragonal