Er-Gd, Lanthanoid, Structural properties

• Al-Er-Gd
• Er-Gd-O
• Er-F-Gd-Na-Yb
• Er-Gd-O-V-Yb
• Co-Er-Gd
• mechanical properties
• compressibility
• rare earth
• lanthanoid
• chalcogen
• transitional
• disordered
• cubic
• hexagonal
• monoclinic
• orthorhombic
• trigonal