Er-x polyhedra, Non-disordered, Rare earth, Orthorhombic

• Ba-Cu-Er-O
• Er-Si
• Er-Ni-Sn
• Er-Ge
• Er-Mn-O
• thermal and thermodynamic properties
• magnetic properties
• structural properties
• electronic and electrical properties
• magnetization
• non-disordered
• rare earth
• lanthanoid
• transitional
• ternary