Temperature evolution of Fe-27Ga structure: Comparison of in situ X-ray and neutron diffraction studies
Journal of Applied Crystallography, ISSN: 1600-5767, Vol: 53, Issue: 5, Page: 1343-1352
2020
- 12Citations
- 8Captures
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Article Description
Comparative in situ X-ray and neutron diffraction studies of the phase transitions in a high magnetostriction Fe-27Ga alloy sample have been performed, with heating up to 850°C and subsequent cooling to room temperature. Different structural information (phase content, phase-transition temperatures, unit-cell behaviour) is obtained for the bulk sample and its surface, and this fact is discussed here in terms of the difference between the scattering properties of X-rays and neutrons. In particular, a gallium-deficient phase with A2-type structure was found on the surface of the sample. The results demonstrate that conventional X-ray diffraction methods are insufficient for precise structural analysis of bulk samples of galfenols and cannot be used alone to build their phase diagrams.
Bibliographic Details
International Union of Crystallography (IUCr)
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