Apatite, Chalcogen, Rare earth, Hexagonal, Mechanical properties

• Ca-La-O-Si
• La-O-Si
• Gd-O-Si
• Dy-O-Si
• La-O-Si-Sr
• elastic moduli
• isothermal bulk modulus
• sound velocity
• Young modulus
• transverse sound velocity
• rare earth
• apatite
• chalcogen
• disordered