Kemmler sack, Oxide, Quaternary

• Bi-Fe-O-Sr
• Ba-Gd-O-U
• Fe-O-Pb-Sr
• Bi-Fe-Nb-O
• Bi-Fe-O-Pt
• structural properties
• magnetic properties
• electronic and electrical properties
• Moessbauer spectra
• magnetic susceptibility
• oxide
• quaternary
• chalcogen
• alkaline
• transitional
• cubic
• trigonal
• tetragonal
• hexagonal
• orthorhombic