Lanthanoid, Rare earth, Pr-Ta

• O-Pr-Ta
• Bi-O-Pr-Sr-Ta
• Ba-O-Pr-Ta
• O-Pr-Sr-Ta
• Cu-O-Pr-Sr-Ta
• thermal and thermodynamic properties
• electronic and electrical properties
• phase transitions
• structural properties
• rare earth
• lanthanoid
• transitional
• chalcogen
• oxide
• orthorhombic
• tetragonal
• monoclinic
• cubic
• trigonal