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Study of the solid solution of MoO3 in Fe2V4O13

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Abstract

Differential thermal and phase X-ray analyses have shown that MoO3 and Fe2V4O13 form a solid substitution solution, in which Mo6+ ions are incorporate into the crystal lattice of Fe2V4O13 in place of V5+ ions. The solubility limit of MoO3 in Fe2V4O13 at ambient temperature is 18 mole % of MoO3. The phase equilibria in the system Fe2V4O13-FeVMoO7, were also studied. Results are presented in the form of a phase diagram.

Zusammenfassung

Durch DTA und Röntgenphasenanalyse wurde gezeigt, daß MoO3 und Fe2V4O13 Substitutionsmischkristalle bilden, in denen Mo6+-Ionen anstelle von V5+-Ionen in das Kristallgitter von Fe2V4O13 eingebaut sind. Die Löslichkeitsgrenze von MoO3 in Fe2V4O13 beträgt bei Umgebungstemperatur 18 Mol-% MoO3. Ebenfalls wurden die Phasengleichgewichte im System Fe2V4O13-FeVMoO7 untersucht. Die Ergebnisse sind in Form eines Phasendiagramms dargestellt.

Резюме

Дифференциальный те рмический и рентгено-фазовый ана лизы показали, что МоО3 и Fe2V4O13 образуют твердый р аствор замещения, в ко тором ионы Мo6+ замешают ионы V5− в кристаллической реш етке Fe2V4O13. Предел растворимости МоО3 в Fe2V4O13 при обычной температуре составл яет 18 мольных %. Изучено также фазовое равновесие с истемы Fe2V4O13-FeVMoO7 и результаты предста влены в форме фазовой диаграммы.

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Walczak, J., Kurzawa, M. Study of the solid solution of MoO3 in Fe2V4O13 . Journal of Thermal Analysis 31, 531–538 (1986). https://doi.org/10.1007/BF01914228

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  • DOI: https://doi.org/10.1007/BF01914228

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