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

fYear

2010

Firstpage

1161

Lastpage

1162

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/INEC.2010.5424976

Filename

5424976