Berastegui

• Ba-Cu-O-Y
• Ba-Cu-O-Pr-Y
• F-Pb-Sn
• Ag-S-Sn
• F-K-Pb
• structural properties
• electronic and electrical properties
• conductivity or resistivity
• ionic conductivity
• transitional
• conductor
• ternary
• disordered
• halogen
• orthorhombic
• cubic
• tetragonal
• hexagonal
• trigonal