Studies on structural and thermal expansion properties of Ho2−xLnxMo4O15 (Ln = Er, Sm and Ce) solid solutions |
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Authors: | MM Wu YZ Cheng J Peng XL Xiao ZB Hu R Kiyanagi JS Fieramosca S Short J Jorgensen |
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Affiliation: | aCollege of Chemistry and Chemical Engineering, Graduate University of Chinese Academy of Sciences, Beijing 100049, China;bIPNS/MSD, Argonne National Laboratory, Argonne, IL 60439, United States |
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Abstract: | Three new series of Ho2−xErxMo4O15 (x = 0.0–2.0), Ho2−xSmxMo4O15 (x = 0.0–0.6) and Ho2−xCexMo4O15 (x = 0.0–0.25) solid solutions have been prepared successfully by solid-state reaction and studied by powder X-ray diffraction. All the XRD patterns of these molybdates can be indexed in monoclinic space group P21/c. Lattice parameters a, b and c of Ho2−xLnxMo4O15 decrease linearly with increasing erbium content and increase with increasing samarium or cerium content. Thermal expansion behaviors of Ho2−xLnxMo4O15 have been investigated in the 25–500 °C temperature range with high-temperature X-ray diffraction. The temperature dependence of Mo(2)–O14 interaction looks like to be responsible for their thermal expansion behaviors. |
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Keywords: | Solid-state reaction Crystal structure Thermal expansion X-ray diffraction |
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