The Mössbauer effect is the recoilless absorption and emission of γ-rays by specific nuclei in a solid (Mössbauer 1958a, 1958b), and provides a means of studying the local atomic environment around the nuclei. It is a short-range probe, and is sensitive to (at most) the first two coordination shells, but has an extremely high energy resolution that enables the detection of small changes in the atomic environment. Mössbauer spectroscopy therefore provides information on phase transformations at the microscopic level.

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Mössbauer spectra of materials can be recorded under a large range of conditions, including temperatures from near absolute...

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