Structure and Properties of Ln2MoO6 Oxymolybdates (Ln = La, Pr, Nd) Doped with Magnesium
| Autor: | E.I. Orlova, Nataliya I. Sorokina, V. I. Voronkova, N. E. Novikova, A. M. Antipin, Timofei A. Sorokin, Elena P. Kharitonova |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
oxymolybdates crystal structure Materials science General Chemical Engineering Infrared spectroscopy 02 engineering and technology Crystal structure thermogravimetry 010402 general chemistry 01 natural sciences Inorganic Chemistry Impurity Phase (matter) General Materials Science infrared spectroscopy Crystallography Doping 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences X-ray diffraction QD901-999 X-ray crystallography Crystallite growth from flux solid-state reactions 0210 nano-technology rare-earth elements |
| Zdroj: | Crystals, Vol 11, Iss 611, p 611 (2021) Crystals Volume 11 Issue 6 |
| ISSN: | 2073-4352 |
| Popis: | The literature data and the results obtained by the authors on the study of the structure and properties of a series of polycrystalline and single-crystal samples of pure and Mg-doped oxymolybdates Ln2MoO6 (Ln = La, Pr, Nd) are analyzed. Presumably, the high-temperature phase I41/acd of Nd2MoO6 single crystals is retained at room temperature. The reason for the loss of the center of symmetry in the structures of La2MoO6 and Pr2MoO6 and the transition to the space group I4¯c2 is the displacement of oxygen atoms along the twofold diagonal axes. In all structures, Mg cations are localized near the positions of the Mo atoms, and the splitting of the positions of the atoms of rare-earth elements is found. Thermogravimetric studies, as well as infrared spectroscopy data for hydrated samples of Ln2MoO6 (Ln = La, Pr, Nd), pure and with an impurity of Mg, confirm their hygroscopic properties. |
| Databáze: | OpenAIRE |
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