Dear Friends, I read some articles about alloys. Most articles have a table listing lattice parameters (a,b,c-axis) and unit cell volumes. But they never explain how those data come from. How do we get those data? By comparing XRD images with PDF databases? Or by calculation? Example: La(Ni3.8)Al(Mn0.2) a = 5.0902 angstrom b = 4.0812 angstrom c = 0.8018 angstrom v = 91.5765 cubic angstrom Thank you in advance for your kindly answer!