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Фазовые равновесия в системе DY2O3 – BAO – FE2O3 и свойства соединений на основе образующихся фаз

Authors: Bastron, I. A.; Volkova, N. E.;

Фазовые равновесия в системе DY2O3 – BAO – FE2O3 и свойства соединений на основе образующихся фаз

Abstract

The object of the study is the complex oxides formed in the ½ Dy2O3– BaO – ½ Fe2O3 system and the samples obtained based on these phases. Synthesis of complex oxides and X-ray analysis of all synthesized samples has been performed. The changes of oxygen content in the solid solutions were measured by thermogravimetric analysis and iodometric titration as a function of temperature. Thermal expansion, total electrical conductivity, and magnetic properties were studied for the cobalt substituted complex oxide. A subsolidus isothermal isobaric phase diagram (1100 °C, in air) for the ½ Dy2O3 – BaO – ½ Fe2O3 system has been constructed.

Объектом исследования являются сложные оксиды, образующихся в системе ½ Dy2O3 – BaO – ½ Fe2O3 и производные, полученные на их основе. В работе был проведен синтез сложных оксидов, рентгенофазовый анализ всех синтезированных образцов. Зависимость кислородной нестехиометрии от температуры была изучена методами йодометрического титрования и высокотемпературной термогравиметрии. Для кобальт-замещенного сложного оксида было изучено линейное термическое расширение, общая электропроводность и магнитные свойства. Предложен изобарно-изотермический разрез фазовой диаграммы ½ Dy2O3 – BaO – ½ Fe2O3 при 1100 °С на воздухе.

Country
Russian Federation
Keywords

КИСЛОРОДНАЯ НЕСТЕХИОМЕТРИЯ, PHASE EQUILIBRIA, ЭЛЕКТРОПРОВОДНОСТЬ, OXYGEN NONSTOICHIOMETRY, THERMAL EXPANSION COEFFICIENT, MAGNETIC PROPERTIES, COMPLEX OXIDE COMPOUNDS, КОЭФФИЦИЕНТ ТЕРМИЧЕСКОГО РАСШИРЕНИЯ, ELECTRICAL CONDUCTIVITY, ФАЗОВЫЕ РАВНОВЕСИЯ, РЕНТГЕНОФАЗОВЫЙ АНАЛИЗ, МАГНИТНЫЕ СВОЙСТВА, X-RAY PHASE ANALYSIS, СЛОЖНОКСИДНЫЕ СОЕДИНЕНИЯ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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