AI Article Synopsis
- XAFS spectroscopy is used to study the structure of materials in liquid and solid phases, specifically focusing on NdCl3 and DyCl3.
- The study reveals that in liquid melts, the distance between metal ions (Nd or Dy) and chlorine ions (Cl) decreases compared to their distances in solid forms, indicating a structural change upon melting.
- Additionally, the results show a more significant reduction in the M-Cl distance for NdCl3 compared to DyCl3 when transitioning from solid to liquid.
Article Abstract
XAFS spectroscopy has increasingly been utilised to elucidate the nearest-neighbour structure in the condensed phases. In this paper, the XAFS spectra of NdCl3 and DyCl3 in both the solid and the liquid phases measured at the Nd and Dy L(III) absorption edges on beam line BM29 of the European Synchrotron Radiation Facility (ESRF) are presented. The Fourier transformed radial structure functions, phi(r) show that the prominent peaks corresponding to M-Cl (M: Nd or Dy) first shell contribution are shifted to shorter distances in the liquid melts as compared to those found in the corresponding solids. Similar behaviour has also been observed from other diffraction techniques in typical ionic melts such as NaCl. From the temperature dependence of the radial structure functions it is clear that the change in the M-Cl distance on melting is much larger in NdCl3 than that in DyCl3.
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| http://dx.doi.org/10.1107/s090904950002015x | DOI Listing |
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