As-Fe-La-O, As-x polyhedra, Phase transitions, Rare earth

• As-F-Fe-La-O
• As-Fe-La-O-Sb
• As-Fe-H-La-O
• As-Fe-La-O-Ru
• structural transitions
• temperature for structural transition
• fusion
• temperature for congruent melting
• pressure derivative of transition temperature
• metalloid
• pnictogen
• chalcogen
• lanthanoid
• rare earth
• tetragonal
• orthorhombic
• trigonal
• triclinic