Chalcogen, Charge-density wave state, Phase transitions, Trigonal

• S-Ta
• Se-Ti
• Fe-Lu-O
• Se-V
• Na-S-V
• structural transitions
• temperature for structural transition
• temperature for congruent melting
• fusion
• pressure for structural transition
• charge-density wave state
• chalcogen
• transitional
• non-disordered
• metal