Magnetic properties of Co-Zr-C alloys

Author

Saito, T. ; Kamagata, Y. ; Wang, W.Q.

Author_Institution

Dept. of Mech. Sci. & Eng., Chiba Inst. of Technol., Narashino, Japan

fYear

2005

fDate

4-8 April 2005

Firstpage

309

Lastpage

310

Abstract

In this paper, the structures and magnetic properties of Co-Zr-C alloys produced by melt-spinning technique are investigated. X-ray diffraction (XRD) is used to identify the phases in the specimen and their microstructures are examined using a scanning electron microscope (SEM). The magnetization is examined at a heating rate of 0.16 K/s in a helium atmosphere using a vibrating sample magnetometer at an applied field of 500 Oe. Results show that the saturation magnetization of the Co-Zr melt-spun ribbons can be improved by the substitution of C for Zr in the Co-Zr alloys and that this substitution promotes the formation of the new magnetic phase with high saturation magnetization and a high Curie temperature. Unlike the Co-Zr-B samples, annealing of the Co-Zr-C ribbons results in the decrease in the coercivity.

Keywords

Curie temperature; X-ray diffraction; annealing; cobalt alloys; coercive force; crystal microstructure; magnetic materials; melt spinning; permanent magnets; scanning electron microscopy; zirconium alloys; CoZrC; Curie temperature; X-ray diffraction; annealing; coercivity; heating rate; magnetic phase; magnetization; melt-spinning technique; melt-spun ribbons; microstructures; scanning electron microscope; vibrating sample magnetometer; Atmosphere; Heating; Helium; Magnetic properties; Magnetometers; Microstructure; Saturation magnetization; Scanning electron microscopy; X-ray diffraction; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Print_ISBN

0-7803-9009-1

Type

conf

DOI

10.1109/INTMAG.2005.1463583

Filename

1463583