In Situ Transmission Electron Microscopy Observations of the Growth Process of Fe3O4-Ag Nanoparticles

doi:10.1007/s40195-020-01053-9

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	In Situ Transmission Electron Microscopy Observations of the Growth Process of Fe3O4-Ag Nanoparticles
	Liu, Jing-Hua ; Liu, Jin-Jun ; Zheng, Qiang ; Bian, Bao-Ru ; Du, Juan
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2020
卷号	33 期号:9 页码:1283-1288
关键词	NANOCOMPOSITE MAGNETS EXCHANGE CORE SIZE
DOI	10.1007/s40195-020-01053-9
英文摘要	The properties of nanocrystals are highly dependent on their morphology, composition and structure. To obtain full control over their properties, the behavior of nanocrystals under external stimuli, such as heat treatment, needs to be understood. Herein, to in situ observe their microstructure and morphology changes, Fe3O4-Ag heterodimers were selected as a model system. Their structural changes after heat treatment were investigated by in situ transmission electron microscopy. A combination of real-time imaging with elemental analysis enabled observation of the transformation of Fe3O4-Ag heterodimers having a loose interface configuration to those with a Janus structure at the atomic scale after heating from room temperature to 600 degrees C. After incubation at 600 degrees C for 32 min, two kinds of Janus structures could be seen, including a clear linear interface in the Fe3O4-Ag heterodimers and a semi-crescent-shaped interface between the Ag and Fe3O4 nanoparticles (NPs). These dynamic observations provide unique insights into NP growth mechanisms, which are essential for understanding and controlling the structure and morphology of nanoparticles.
学科主题	Metallurgy & Metallurgical Engineering
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/19759]
专题	2020专题
作者单位	1.Du, J (corresponding author), Shanghai Univ, Inst Mat, Shanghai 200444, Peoples R China. 2.Bian, BR 3.Du, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, CAS Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China. 4.Zheng, Q
推荐引用方式 GB/T 7714	Liu, Jing-Hua,Liu, Jin-Jun,Zheng, Qiang,et al. In Situ Transmission Electron Microscopy Observations of the Growth Process of Fe3O4-Ag Nanoparticles[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020,33(9):1283-1288.
APA	Liu, Jing-Hua,Liu, Jin-Jun,Zheng, Qiang,Bian, Bao-Ru,&Du, Juan.(2020).In Situ Transmission Electron Microscopy Observations of the Growth Process of Fe3O4-Ag Nanoparticles.ACTA METALLURGICA SINICA-ENGLISH LETTERS,33(9),1283-1288.
MLA	Liu, Jing-Hua,et al."In Situ Transmission Electron Microscopy Observations of the Growth Process of Fe3O4-Ag Nanoparticles".ACTA METALLURGICA SINICA-ENGLISH LETTERS 33.9(2020):1283-1288.