Crystal Structute of Complex Oxides in the Nd2O3–MO–Fe2O3 (M = Ca, Sr) Systems.
In: Inorganic Materials, Jg. 56 (2020), Heft 1, S. 42-46
Online
academicJournal
Zugriff:
The boundaries of homogeneity ranges and structure of solid solutions formed in the quasi-ternary Nd2O3–MO–Fe2O3 (M = Ca, Sr) systems at 1373 K in air were determined by the homogenizing annealing and X-ray powder diffraction methods. It was found that two types of solid solutions have formed in the Nd–Ca–Fe–O system: Nd1– xCaxFeO3 – δ (0 ≤ x < 0.35 and 0.95 ≤ x < 1.00) and Ca2– yNdyFeO4 – δ (0.90 ≤ y ≤ 0.95), but four solid solutions in the Nd–Sr–Fe–O system: Nd1– xSrxFeO3 – δ (0 < x ≤ 0.6 and 0.7 ≤ x ≤ 0.9), Sr2 –yNdyFeO4 – δ (0.7 ≤ y ≤ 0.9), Sr3– zNdzFe2O7 – δ (0 < z ≤ 0.4 and 1.8 ≤ z ≤ 1.9) and. Sr4 –uNduFe3O10 – δ (0.7 ≤ u ≤ 0.9). The structural parameters of the solid oxides were refined by the full-profile Rietveld analysis. The unit cell parameters versus composition of solid solutions were plotted. [ABSTRACT FROM AUTHOR]
| Titel: |
Crystal Structute of Complex Oxides in the Nd2O3–MO–Fe2O3 (M = Ca, Sr) Systems.
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| Autor/in / Beteiligte Person: | Urusova, A. S. ; Vakhromeeva, A. E. ; Aksenova, T. V. ; Bryuzgina, A. V. ; Cherepanov, V. A. |
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| Zeitschrift: | Inorganic Materials, Jg. 56 (2020), Heft 1, S. 42-46 |
| Veröffentlichung: | 2020 |
| Medientyp: | academicJournal |
| ISSN: | 0020-1685 (print) |
| DOI: | 10.1134/S0020168520010173 |
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