Abstract

Dysprosium hafnate Dy₂HfO₅ powders are prepared through mechanochemical synthesis from hafnium and dysprosium oxides. The structure and main physicochemical characteristics are studied using XRD, scanning electron spectroscopy, Raman spectroscopy (CS spectra), TEM, and chemical analysis. XRD and analysis of CS spectra shows that full transformation of initial oxides into single-phase nanodispersed dysprosium hafnate (Dy₂HfO₅) occurs during mechanical treatment of the mixture for 40 min. Raman spectrometry of the dysprosium hafnate powder prepared through mechanosynthesis shows the absence of unreacted hafnium and dysprosium oxides and the formation of single-phase dysprosium hafnate.

中文翻译：

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机械化学法制备铪酸镝Dy2HfO5纳米分散粉体

摘要

铪酸镝 Dy ₂ HfO ₅粉末是通过机械化学合成从铪和镝氧化物制备的。使用XRD、扫描电子光谱、拉曼光谱（CS光谱）、TEM和化学分析来研究结构和主要理化特性。XRD 和 CS 光谱分析表明，在对混合物进行机械处理 40 分钟期间，初始氧化物完全转变为单相纳米分散的铪酸镝 (Dy ₂ HfO ₅ )。通过机械合成制备的铪酸镝粉末的拉曼光谱表明不存在未反应的铪和镝氧化物，并且形成了单相铪酸镝。