ICDD 2014-15 Product Overview

The world’s largest collections of solid state diffraction data
Targeted materials collections



The ICDD edits, reviews and classifies diffraction data into dozens of subfiles. PDF-4+ contains the world's largest collection of minerals, ceramics, and metals and alloys. PDF-4/Organics has the world’s largest collection of polymers, pharmaceuticals and excipients.

A few select subfiles are shown in the Table.  Subfiles are added as new materials fields are developed including the recently added thermoelectric, hydrogen storage materials and battery subfiles. In total, there are 32 subfile classifications.

ICDD databases are comprehensive because they combine powder diffraction data (source 00) with single crystal data (sources 01-05).


Over 1 million publications reviewed



Each ICDD product is the result of a series of current and historic collaborations with international database organizations. New data are added to each product every year.

Every entry is reviewed based on our ISO certified procedures. This keeps both quality and the unique content high. ICDD editors have reviewed over 1 million published entries with publication of over 897,000 entries in ICDD products.


Quantitative analyses
 (supporting RIR, LeBail, Pattern Fit and Rietveld methods)



The major difference in the PDF-2 and PDF-4 product lines is that PDF-4 products are designed in content for semi quantitative and quantitative analysis. All data can be expressed as full digital patterns, most are indexed, and many have atomic coordinates for Rietveld Analysis. PDF-4+ has the world’s largest collection of inorganic atomic coordinate sets.

PDF-4 products contain select full digital experimental patterns of non crystalline and partially crystalline materials so that you can identify and quantitate polymers, clays, nano and amorphous materials.


Over 1.2 Million reference citations



Well over a million references and hundreds of thousands of authors have contributed to the Powder Diffraction File. The data are sourced from around the globe, and include journal articles, grants, dissertations, and patents.

ICDD provides grants to collect new data on an annual basis.


* Entry numbers for PDF-4/Organics 2015 are preliminary, based on alpha testing, and subject to minor revisions.