Chalcogen, Rare earth, Er-Fe-O

• Er-Fe-Mn-O
• Ba-Er-Fe-O
• Ba-Cu-Er-Fe-O
• B-Er-Fe-O
• thermal and thermodynamic properties
• structural properties
• magnetic properties
• electronic and electrical properties
• phase transitions
• transitional
• chalcogen
• rare earth
• lanthanoid
• oxide
• orthorhombic
• cubic
• trigonal
• tetragonal
• monoclinic