ICSD is the world's largest inorganic crystal structure database provided by FIZ Karlsruhe in Germany. It contains 185,000 fully characterized inorganic crystal structure details published since 1913, providing basic information services for the field of material science and nanotechnology. FIZ Karlsruhe (Karlsruhe Patent Information Center) is a non-profit organization established in 1977. It is the largest non-university information facility institution in Germany and a member of the Leibniz Society. Information provided: Structural data on pure elements, minerals, metals, and intermetallic compounds; Structural parameters (Pearson symbol, ANX formula, Wyckoff sequence); Bibliographic data; Synthesis conditions, etc. Contains data: crystal structure data for 2,032 elements; 34,587 binary compound data; 68,064 ternary compound data; 66,817 pieces of data are quaternary compounds and above; 147,000 data (80%) are divided into 9,141 different structural types.