The Powder Diffraction File

• Comprehensive
• Continuous Quality Analysis and Improvement
• Designed for Material Identification
• Data Mining

Comprehensive

The Powder Diffraction File (PDF) combines data from multiple database sources to ensure comprehensive coverage of solid state materials. Materials data from around the globe are critically evaluated, categorized, and standardized to maximize your ability to identify and characterize materials. The ICDD is now entering its 58th year of annual publication. The database currently represents the collective works of hundreds of thousands of authors, thousands of publications, and 594,380 published material data sets.

The growth of the PDF is due to the contributions of several database organizations. These organizations extract and edit data from global sources on a continuous basis.

Collaborative partners include:

• Cambridge Crystallographic Data Centre (CCDC), Cambridge, UK—Cambridge Structural Database (CSD)
• Fachinformationszentrum Karlsruhe (FIZ), Karlsruhe, Germany—Inorganic Crystal Structure Database (ICSD)
• National Institute of Standards and Technology (NIST), Gaithersburg, Maryland
• Material Phases Data System (MPDS), Vitznau, Switzerland—Linus Pauling File (LPF)

In total, the ICDD receives and processes approximately 50,000 material data sets annually. After the ICDD editorial review, which includes quality analysis, standardization, duplicate removal and material classification, approximately 90% of the data sets are published. In Release 2008, a total of 45,437 new entries were published in PDF databases.