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	Preparation of nanosized La/sub 1-x/Sr/sub x/CoO/sub 3 / via La/sub 1-x/Sr/sub x/Co(DTPA) middot 6H/sub 2/O amorphous complex precursor
	Yongfa Zhu ; Hai Wang ; Ruiqin Tan ; Lili Cao
	2010-05-06 ; 2010-05-06
关键词	Experimental/ calcination differential thermal analysis grain size lanthanum compounds nanoparticles nanostructured materials powder technology strontium compounds thermal analysis transmission electron microscopy X-ray diffraction/ amorphous complex precursor La/sub 1-x/Sr/sub x/CoO/sub 3/ La/sub 1-x/Sr/sub x/Co(DTPA) sup 6H/sub 2/O cobalite oxide powder perovskite structure low calcination temperature amorphous heteronuclear complex cobalite oxide differential thermal analysis thermal gradient analysis X-ray diffraction XRD crystalline powder calcination temperature calcination time transmission electron microscopy TEM grain size crystal size heat-treatment time 600 to 800 C La/sub 1-x/Sr/sub x/CoO/sub 3// A8116 Methods of nanofabrication and processing A6146 Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials A8120L Preparation of ceramics and refractories A8120E Powder techniques, compaction and sintering A8140G Other heat and thermomechanical treatments A6480G Microstructure/ temperature 8.73E+02 to 1.07E+03 K/ LaSrCoO3/ss Co/ss La/ss O3/ss Sr/ss O/ss
中文摘要	Nanosized La/sub 1-x/Sr/sub x/CoO/sub 3/ (x = 0.05, 0.1, 0.6) cobalite oxide powder with perovskite structure was successfully synthesized at a relatively low calcination temperature by using an amorphous heteronuclear complex La/sub 1-x/Sr/sub x/Co(DTPA) middot 6H/sub 2/O as a precursor. The precursor decomposed completely into cobalite oxide above 600 degrees C based on the differential thermal analysis (DTA) and thermal gradient analysis (TGA) results. X-ray diffraction (XRD) demonstrated that nanosized La/sub 1-x/Sr/sub x/CoO/sub 3/ crystalline powder with perovskite structure was obtained after the calcination temperature increased to 600 degrees C. The effects of calcination time and temperature were also examined by XRD and transmission electron microscopy (TEM). The results indicated that the grain size and the crystal size of La/sub 1-x/Sr/sub x/CoO/sub 3/ increased with the calcination temperature from 600 to 800 degrees C, and were less influenced by the heat-treatment time. It can be concluded that it was a useful way to synthesize nanosized perovskite oxides using an amorphous complex as a precursor, and this method can be easily quantitatively controlled.
语种	英语 ; 英语
出版者	Elsevier ; Switzerland
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/13469]
专题	清华大学
推荐引用方式 GB/T 7714	Yongfa Zhu,Hai Wang,Ruiqin Tan,et al. Preparation of nanosized La/sub 1-x/Sr/sub x/CoO/sub 3 / via La/sub 1-x/Sr/sub x/Co(DTPA) middot 6H/sub 2/O amorphous complex precursor[J],2010, 2010.
APA	Yongfa Zhu,Hai Wang,Ruiqin Tan,&Lili Cao.(2010).Preparation of nanosized La/sub 1-x/Sr/sub x/CoO/sub 3 / via La/sub 1-x/Sr/sub x/Co(DTPA) middot 6H/sub 2/O amorphous complex precursor..
MLA	Yongfa Zhu,et al."Preparation of nanosized La/sub 1-x/Sr/sub x/CoO/sub 3 / via La/sub 1-x/Sr/sub x/Co(DTPA) middot 6H/sub 2/O amorphous complex precursor".(2010).

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