Adding new materials in database

[ams_nanolab]

Dear Sir,

Could you tell me where to find accurate .xyz or .cif files of new materials to add to ATK database? Which repository/ database does ATK use to get its structures from? 

[kstokbro]

There are many online databases, forinstance:

http://rruff.geo.arizona.edu/AMS/amcsd.php
http://mits.nims.go.jp/index_en.html

[Anders Blom]

http://icsd.fiz-karlsruhe.de/
http://www.crystallography.net/

For molecules, try http://www.chemspider.com/

[ams_nanolab]

Thanks all for the resources