Rare earth, Transitional, Remtdv

• La-Ni
• Ni-Y
• O-Pr-Ta
• Ce-O-Ta
• Er-O-Ti
• structural properties
• phase diagram
• phase transitions
• rare earth
• transitional
• lanthanoid
• ternary
• chalcogen
• hexagonal
• trigonal
• orthorhombic
• monoclinic
• tetragonal