PDF Measurements at Elevated Temperatures
Pair distribution function (PDF) analysis is a key tool for understanding the local structure of materials. Non-ambient PDF is an extension to this technique and allows the study of structural changes under conditions such as elevated temperatures. XRDynamic 500, an automated multipurpose powder X-ray diffractometer, matched with a supported non-ambient chamber such as HTK 1200, enables high-quality PDF measurements under such conditions.
Introduction
Pair distribution function (PDF) analysis is a powerful method for studying the local atomic structure of materials. It provides information on short- and intermediate-range atomic correlations, including local distortions and disorder. Unlike conventional diffraction, which mainly probes long-range order, PDF analysis reveals structural features that are otherwise not accessible.
Non-ambient PDF measurements extend this capability by enabling studies under varying temperatures, pressures, or chemical environments. This allows tracking of changes in local bonding and atomic arrangements as external conditions are applied, even when crystallinity is reduced or lost. As a result, PDF analysis is particularly valuable for understanding structural changes in a material.
This application report demonstrates the capabilities of XRDynamic 500 for non-ambient PDF measurements at elevated temperatures.
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