Chalcogen, Non-disordered, Energy band structure, Trigonal

• Ni-O
• Se-Ti
• Bi-Se
• Bi-Te
• S-Ti
• electron energy band structure
• Brillouin zone
• Fermi energy
• Fermi surface
• energy level diagram
• non-disordered
• chalcogen
• transitional
• ternary
• binary