Bi-Nb, Debye or einstein temperature, Disordered

• Bi-K-Na-Nb-O-Ti
• Bi-Ca-Nb-O
• Ba-Bi-Nb-O
• Ba-Bi-K-Na-Nb-O-Ti
• Bi-Fe-Nb-O
• transitional
• disordered
• pnictogen
• chalcogen
• tetragonal
• cubic
• orthorhombic
• trigonal
• hexagonal