F-La, F-x polyhedra, Phase transitions, Rare earth

• As-F-Fe-La-O
• F-La-O
• Eu-F-La-O
• F-La-Sr
• fusion
• temperature for congruent melting
• structural transitions
• temperature for structural transition
• pressure for structural transition
• transitional
• lanthanoid
• halogen
• rare earth
• fluoride
• trigonal
• tetragonal
• orthorhombic
• cubic
• monoclinic