# MedeA InfoMaticA - Rapid Access to Comprehensive Experimental Structure Data

Rapid access to reliable experimental data is the foundation of materials science and technology, where in particular, crystallographic structural data are pivotal for atomic-scale understanding and simulations. MedeA®[1] InfoMaticA provides integrated search and retrieval capabilities of the world’s most comprehensive crystallographic structural databases.

At-a-Glance

MedeA InfoMaticA lets you rapidly access structure data and related property from the Linus Pauling File (LPF), the Inorganic Crystal Structure Database (ICSD), the NIST Crystal Database (NCD), and the Crystallography Open Database (COD). Collectively, these experimental databases contain well over 1.2 million entries. In addition, MedeA InfoMaticA allows for the construction of a custom, searchable structure database using computed properties.

Key Benefits

• Brings an exhaustive experimental resource to your fingertips: together LPF, ICSD, NCD and COD contain over 1.2 million organic and inorganic entries
• Enhances your productivity through Cross-Database Search and Smart Grouping of Results
• Provides direct input for simulations for any type of experimentally known crystal

The retrieval of a crystal structure from an experimental resource is often the first step in the modeling of a material. In fact, agreement of computed and experimental structural data of a model system is an excellent initial test of the validity of a chosen computational approach.

MedeA InfoMaticA - Number of records by constituent count and database

With MedeA InfoMaticA simultaneously search the databases, including user-created databases. Display the bibliographic reference and explanatory text. Retrieve, view, and modify 3-D atomistic models within the graphical user interface of MedeA. In addition, compute and display X-ray diffraction (XRD) powder patterns.

‘The world’s most comprehensive crystallographic structural databases at your fingertips.’

## Specifications

• Graphical Database Search and Retrieval Interface, fully integrated with MedeA environment
• Configurable with major experimental structure databases (data on disk)
• Inorganic Crystal Data (ICSD)
• NIST Crystal Data (NCD)
• Pearson’s datafile (Pearson)
• Crystalline Open Database (COD)
• Uses the Structured Query Search Language SQLite as the default database engine
• Regular database updates in collaboration with database providers

## Key Features

• Uses an intuitive, menu-based query syntax, e.g. “Formula contains any number of transition metals” AND “Formula contains exactly 2 atoms of oxygen” AND “Formula does not contain hydrogen”
• Smart function filters search results and arranges results by representative space group/symmetry
• Comprehensive and flexible listing of experimental structure records: Tabulated, sortable by cell parameters, symmetry, reference, year, and much more
• Provides full bibliographic references and direct input for simulations
• Interactive, graphical display of chemical unit cell, geometry parameters and XRD powder pattern
• Fully integrates with MedeA builders, property modules, and compute engines
• Expandable with computed structure data and property data

MedeA InfoMaticA Screenshot. Query fields with search criteria, tabulated results, and record-specific information

## Properties

• Ready-to-use structure models in the form of chemical unit cells
• Lattice parameters, stoichiometry symmetry (space group)
• Wyckhoff positions, site occupancy
• Atomic coordinates, interatomic distances and angles
• Zoomable nearest neighbor plots and coordination number analysis
• Pair correlation function
• X-ray diffraction (XRD) powder pattern for varying radiation sources
• Bibliographic reference, remarks on experimental setup (if present)
• All properties can be used as search criteria

MedeA InfoMaticA Screenshot. Pair correlation function, atomic coordination, and XRD powder pattern

## Required Modules

• MedeA Environment

## Find Out More

MedeA InfoMaticA is the ideal starting point for building atomic structures of bulk phases with or without defects, surfaces, interfaces, etc. Learn more about MedeA InfoMaticA in the video tutorial: How to Calculate Elastic Constants with MedeA VASP 5 on the Materials Design Youtube Channel.

 [1] MedeA and Materials Design are registered trademarks of Materials Design, Inc.
download: pdf