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首页> 外文期刊>Journal of Thermal Analysis and Calorimetry >Synthesis and structural characterization of perovskite YFeO3 by thermal decomposition of a cyano complex precursor, Y[Fe(CN)6]·4H2O
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Synthesis and structural characterization of perovskite YFeO3 by thermal decomposition of a cyano complex precursor, Y[Fe(CN)6]·4H2O

机译:氰基络合物前驱体Y [Fe(CN) 6 ]·4H 2 的热分解法合成钙钛矿YFeO 3 及其结构表征

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The thermal decomposition of Y[Fe(CN)6]·4H2O has been studied in order to investigate the formation of the multi-ferroic oxide YFeO3. The starting material (Y[Fe(CN)6]·4H2O) and the decomposition products were characterized by IR spectroscopy, thermal analysis, X-ray powder diffraction (PXRD), and scanning electron microscopy. Metastable YFeO3 with hexagonal structure, space group P6 3 /mmc, was obtained by thermal decomposition of Y[Fe(CN)6]·4H2O at 600 °C in air. Orthorhombic YFeO3 was obtained by the same method at T ≥ 800 °C in air. The crystal structure of orthorhombic YFeO3 was refined by Rietveld analysis using PXRD data. We found that it was slightly deficient in Y3+, which is in agreement with the small amount of Y2O3 found as impurity in the sample. The formula of the orthorhombic phase is Y0.986FeO3.
机译:为了研究多元铁氧化物YFeO 3的形成,研究了Y [Fe(CN) 6 ]·4H 2 O的热分解。 。通过红外光谱,热分析,X射线粉末衍射(Y [Fe(CN) 6 ]·4H 2 O)和分解产物进行表征。 PXRD)和扫描电子显微镜。通过Y [Fe(CN) 6 ]·的热分解,得到具有六方结构的亚稳YFeO 3 ,空间群P6 3 / mmc。空气中600°C时4H 2 O。在空气中T≥800°C时,通过相同的方法获得正交晶YFeO 3 。利用PXRD数据通过Rietveld分析对正交晶YFeO 3 的晶体结构进行了改进。我们发现它的Y 3 + 略有不足,这与少量的Y 2 O 3 作为杂质被发现是一致的。例子。正交相的分子式为Y 0.986 FeO 3

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