I need this 2 files (Powder diffraction file, nº 22–1455 (JCPDS ICDD 2000). and Powder diffraction file, nº 23–671 (JCPDS ICDD 2000)) to analyze my XRD result. Does anyone know how I can get them?
JCPDS does not exist. It changed in 1978 to ICDD. The files they produce are found in the various PDF databases, you will need to purchase these - Very expensive, if you want this, follow the link at the end.
However, you can obtain crystal structures for these materials from free databases e.g. CoD and ICSD, and use software e.g. PowderCell to model the XRD patterns.