Title :
TEM study and magnetic measurements of precipitates formed in Cu-Fe-Ni alloy
Author :
Sung Kang ; Takeda, Masanori ; Takeguchi, M. ; Dong-sik Bae
Author_Institution :
Dept. of Mater. Sci. & Eng. (SEISAN), Yokohama Nat. Univ., Yokohama, Japan
Abstract :
The precipitation behavior of Cu-Fe alloys with Ni addition on isothermal annealing at 878 K was investigated by means of transmission electron microscopy (TEM) and SQUID measurements. Nano-scale coherent particles were randomly formed at the initial stage of the precipitation process. The ordering trend was outstanding that two or more nano-scale particles cubic in shape are linearly aligned at later stages of the precipitation. Finally linear chains of the precipitates were formed along the <100> orientations of Cu matrices in the ternary Cu-Fe-Ni alloys. The present SQUID measurements revealed several significant influences to magnetic properties were induced during the precipitation in Cu-Fe-Ni alloys.
Keywords :
annealing; cobalt alloys; coercive force; ferromagnetic materials; iron alloys; magnetic particles; nanofabrication; nanoparticles; nickel alloys; precipitation (physical chemistry); transmission electron microscopy; <100> orientations; CuFeNi; SQUID; TEM; coercive force; isothermal annealing; nanoscale particles; precipitation; residual magnetization; saturated magnetization; temperature 878 K; transmission electron microscopy; Aging; Annealing; Copper alloys; Isothermal processes; Magnetic properties; Magnetic variables measurement; Microstructure; Nickel alloys; SQUIDs; Transmission electron microscopy;
Conference_Titel :
Nanoelectronics Conference (INEC), 2010 3rd International
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-3543-2
Electronic_ISBN :
978-1-4244-3544-9
DOI :
10.1109/INEC.2010.5424976
