Pressure dependence of structural, electronic, elastic and thermodynamic behaviors of AlY2: A first principles study

► AlY2 exhibits half-metallic conductivity. ► AlY2 is mechanically stable. ► The primary parameter limiting the stability of AlY2 is shear modulus. ► The ductility of AlY2 may be improved under high pressures. ► External pressure has a little influence on the thermodynamic properties.