OXYGEN INTERCALATION IN STRONTIUM FERRITE: EVOLUTION OF THERMODYNAMICS AND ELECTRON TRANSPORT PROPERTIES

机译：锶铁氧体中的氧嵌入：热力学演化和电子输运性质

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The thermodynamics of oxygen intercalation in strontium ferrite SrFe_(2.5+δ) is studied by means of the coulometric titration technique. The analysis of the oxygen concentration dependent behavior of partial thermodynamic functions reveals inhomogeneous architecture of the ferrite, which can be viewed as consisting of microscopic brownmillerite-like domains intergrown with perovskite-like structural fragments. The oxygen vacancies are mainly located in the brownmillerite-like domains. The oxygen intercalation results in a gradual increase of the perovskite-like fragments and delocalization of the hole carriers. The changes in conductivity and thermopower with oxygen content can satisfactorily be explained in frameworks of a small-polaron conduction model.

机译：采用库仑滴定技术研究了锶铁氧体SrFe_（2.5 +δ）中氧嵌入的热力学。对部分热力学函数的依赖于氧浓度的行为的分析揭示了铁素体的不均匀结构，该结构可以看成是由微观钙钛矿状结构域与钙钛矿状结构碎片相互混合组成。氧空位主要位于类褐铁矿区。氧的插入导致钙钛矿样碎片的逐渐增加和空穴载流子的离域。在小极化子传导模型的框架中，可以令人满意地解释电导率和热功率随氧含量的变化。

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《NATO Advanced Study Institute on New Trends in Intercalation Compounds for Energy Storage, Sep 22-Oct 2, 2001, Sozopol, Bulgaria》|2001年|p.565-572|共8页
会议地点 Sozopol(BG)
作者
M.V. PATRAKEEV; J.A. SHILOVA; E.B. MITBERG; A.A. LAKHTIN; LA. LEONIDOV; V.L. KOZHEVNIKOV;
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Institute of Solid State Chemistry, Ural Branch of RAS, Pervomaiskaia 91 GSP-145, Ekaterinburg 620219, Russia;

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正文语种 eng
中图分类能源与动力工程;
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OXYGEN INTERCALATION IN STRONTIUM FERRITE: EVOLUTION OF THERMODYNAMICS AND ELECTRON TRANSPORT PROPERTIES

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