期刊
THIN SOLID FILMS
卷 539, 期 -, 页码 102-107出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2013.05.080
关键词
Phase stability; Miscibility gap; Nanoparticle; Thin film; Electrodeposition; Transmission electron microscopy
类别
资金
- Department of Science and Technology, India DST-SERB grant
Ag-Ni films were electrodeposited over a Cu substrate. Structural characterization revealed a fibrous microstructure with an amorphous structure for the as-deposited film. Isothermal annealing at 400 degrees C of the film inside transmission electron microscope led to amorphous-to-crystalline transition along with the evolution of nano-sized particles in the microstructure. The crystalline phase was Ni-Ag solid solution. The relative volume fraction of the nano-sized particles increased gradually with time. There was however no detectable decomposition of solid solution phase till about 4 h of annealing. Beyond 4 h phase separation initiated and pure Ag and Ni phases formed in the film. This study provides a methodology by which microstructural engineering of as-electrodeposited amorphous Ag-Ni films can be conducted to isolate a particular microstructure in order to tap specific potentially usable functionalities. (C) 2013 Elsevier B.V. All rights reserved.
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