Khlissa

• Na-O-P-Y
• Eu-Na-O-P-Y
• H-La-O-P
• O-P-Rb-Tb
• optical properties
• thermal expansion
• optical absorption
• thermal and thermodynamic properties
• structural properties
• phosphate
• pnictogen
• chalcogen
• rare earth
• alkali
• monoclinic
• hexagonal