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A free-of-charge demo version with a few thousand datasets can be downloaded. More...

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A quickstart manual is also available in Spanish. More...
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Pearson's Crystal Data
Crystal Structure Database for Inorganic Compounds

Pearson's Crystal Data is a crystallographic database published by ASM International (Materials Park, Ohio, USA), edited by Pierre Villars and Karin Cenzual. It has its roots in the well-known PAULING FILE project and contains crystal structures of a large variety of inorganic materials and compounds. The "PCD" (as it is typically abbreviated) is a collaboration between ASM International and Material Phases Data System, Vitznau, Switzerland (MPDS), aiming to create and maintain the world's largest critically evaluated "Non-organic database".

Click to enlarge (1146 x 781)

The current release 2013/14 contains more than 242,600 structural data sets (including atom coordinates and displacement parameters, when determined) for about 141,600 different chemical formulas, roughly 16,000 experimental powder diffraction patterns and about 220,000 calculated patterns (interplanar spacings, intensities, Miller indices). This release achieves nearly full overlap with ICSD entries.

The database comes with an innovative retrieval software for Windows PCs developed by Crystal Impact. It offers a large variety of new elaborate new features which make retrieval of the desired information extremely easy and comfortable.

Pearson's CD News

Aug 27, 2013
A new Release 2013/14 of Pearson's Crystal Data has just become available, with a total entry count of more than 242,600. More...

Aug 6, 2012
Release 2012/13 of Pearson's Crystal Data has just become available with a total entry count of more than 227,000. More...

Jun 11, 2012
A software update is available for release 2011/12 of Pearson's Crystal Data fixing some bugs. More... 

Dec 5, 2011
A software update is available for release 2011/12 of Pearson's Crystal Data fixing two bugs. More... 

Jul 22, 2011
Release 2011/12 of Pearson's Crystal Data has just become available with a total entry count of 212,500. More...

Aug 9, 2010
Release 2010/11 of Pearson's Crystal Data has just become available with a total entry count of 197,000. More...

Jun 30, 2010
A software update is available for all releases of Pearson's Crystal Data. (The cross-reference link to ASM Alloy Phase Diagrams Center changed.) Customers should download it from here... 

May 31, 2010
A software update (with some bug fixes) is available for all releases of Pearson's Crystal Data. Customers should download it from here... 

Nov 27, 2009
A software update is available for all releases of Pearson's Crystal Data. (Problems on systems that do not use ANSI as default character set.) Customers should download it from here... 

Sep 29, 2009
A software update is available for all releases of Pearson's Crystal Data. (The cross-reference link to Landolt-Boernstein changed.) Customers should download it from here... 

July 1, 2009
Release 2009/10 of Pearson's Crystal Data has just become available with 15,000 new entries. More...

Dec 15, 2008
A Spanish version of the Pearson's Crystal Data quickstart manual has become available thanks to the efforts of Prof. Santiago Rodríguez Almenar. More...

Oct 31, 2008
New low-price licence types are available for Pearson's Crystal Data, starting at 360 Euros. More...

News archive...