Chalcogen, Lanthanoid, Er-O, Phase transitions

• Er-Mn-O
• Ba-Cu-Er-O
• Er-O-V
• Al-Er-O-Zr
• temperature for congruent melting
• fusion
• phase diagram
• structural transitions
• rare earth
• lanthanoid
• chalcogen
• transitional
• monoclinic
• cubic
• orthorhombic
• tetragonal
• trigonal