Alkali, Chalcogen, Non-disordered, Thermal expansion, Trigonal

• K-Na-O-Se
• Na-O-P-Ti
• O-P-Rb-Ti
• Li-Na-O-S
• K-Lu-O-P
• linear thermal expansion coefficient
• volume thermal expansion coefficient
• non-disordered
• alkali
• chalcogen
• transitional