Sol-gel preparation and characterization of gadolinium aluminate
Sol-gel preparation and characterization of gadolinium aluminate
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DOI：
10.1016/j.matchemphys.2006.11.016
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发表时间：
2007-03-15
影响因子：
4.6
通讯作者：
Kareiva, A.
中科院分区：
文献类型：
--
作者：
Cizauskaite, S.;Reichlova, V.;Kareiva, A.
本文报道了用不同原料溶胶-凝胶法制备纳米晶铝酸钆（GdAlO3， GAP）的研究结果。以硝酸钆或氧化钆为Gd原料，以硝酸铝为Al源，进行溶胶-凝胶法处理。将金属原料溶解在稀释的乙酸中生成金属离子，用1,2-乙二醇络合得到GAP前驱体。采用热分析（TGA/DTA）、粉末x射线衍射分析（XRD）、红外光谱（IR）和扫描电镜（SEM）研究了凝胶和多晶样品的相变、组成和微观结构特征。以氧化钆为起始材料，在1000℃下烧结的GAP陶瓷的XRD谱图与单相钙钛矿GdAlO3组成一致。(c) 2006 Elsevier B.V.版权所有
This paper reports on the results concerning the sol-gel preparation of nanocrystalline gadolinium aluminate (GdAlO3, GAP) using different starting materials. The gadolinium nitrate or gadolinium oxide as Gd raw compounds and aluminium nitrate as Al source were used in the sol-gel processing. The metal ions, generated by dissolving starting materials of metals in the diluted acetic acid were complexed by 1,2-ethanediol to obtain the precursor for the GAP. The phase transformations, composition and micro-structural features in the gels and polycrystalline samples were studied by thermal analysis (TGA/DTA), powder X-ray diffraction analysis (XRD), infrared spectroscopy (IR) and scanning electron microscopy (SEM). The XRD patterns of the GAP ceramic sintered at 1000 degrees C using gadolinium oxide as starting material were identical with the single-phase perovskite GdAlO3 composition. (c) 2006 Elsevier B.V. All rights reserved.