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This site is an interface to a crystal structure database that includes every structure published in the American Mineralogist, The Canadian Mineralogist, European Journal of Mineralogy and Physics and Chemistry of Minerals, as well as selected datasets from other journals. The database is maintained under the care of the Mineralogical Society of America and the Mineralogical Association of Canada, and financed by the National Science Foundation. http://rruff.geo.arizona.edu/AMS/amcsd.php ĿǰΪֹ£¬ÎÒûÓз¢ÏÖÓбÈÕâ¸öÊý¾Ý¿â¸üºÃµÄ¡£ÁíÍâÕâ¸öÊý¾Ý¿âÊÇÃâ·ÑµÄ¡£ ûÓÐ×öËÑË÷£¬µ«ÊÇ×ÔÐÅûÓÐÖØ¸´¡£ -------------------------------- Silver Standard elemental phase Lattice: Face-Centered Cubic (fcc) Pearson symbol: cF4 Strukturbericht: A1 Spacegroup: Fm-3m (Number 225; Schönflies: oh5) Reference: CRC83 Lattice parameters: a: 4.0857 Å Number of atoms in the primitive cell: 1 Atoms: Ag -------------------------------- Some people ask how to use the database. Actually, it just provides necessary information about crystal structures. For example as pasted above (copy from data of VNL), to create a silver crystal structure, we need to know the spacegroup, lattice constants, and the positions of atoms. Normally, we can find the former two parameters easily from XRD database. However, it is hard to find the positions of atoms in an unit. The book of Pearson provides atom positions of most crystals. Here the database I recommend also includes large amount of crystals and it is free for use. The database of VNL just contains some crystals and is far from completed. For example, I can't not find the structures of ZnO crystals. So according to the database I suggest you can find information of ZnO, by which you just change the corresponding place of other crystal file to create the crystal what you want. My input tool does not work. So write down with E. Sorry about it. [ Last edited by yipinchun on 2008-12-28 at 16:20 ] |
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