Synthesis and magnetic moment of α´ and γ´-Fe-N phases with various unit-cell volume

Author

Sunaga, K. ; Tsunoda, M. ; Takahashi, M.

Author_Institution

Dept. of Electron. Eng., Tohoku Univ., Sendai, Japan

fYear

2005

fDate

4-8 April 2005

Firstpage

77

Lastpage

78

Abstract

α´ and γ´ phases of Fe-N are synthesized with various unit cell volume using multilayer fabrication technique. The volume effect on magnetic moment and Curie temperature (T_c) for these phases is examined. In the case of α´-Fe-N, the magnetic moment and the exchange integral, which corresponds to T_c, decrease with increasing unit cell volume. For γ´-F-N, the magnetic moment and exchange integral take a maximum near the volume of bulk Fe₄N. From these results, both the magnetic moment and T_c is expected to enhance when the unit-cell volume of the γ´ phase is larger than that of bulk Fe₄N without leading to structural instability.

Keywords

Curie temperature; crystal structure; exchange interactions (electron); iron compounds; magnetic moments; magnetic multilayers; α´ phase; γ´ phase; FeN; exchange integral; magnetic moment; multilayer fabrication technique; unit-cell volume; Bones; Fabrication; Iron; Lattices; Magnetic films; Magnetic materials; Magnetic moments; Magnetic multilayers; Temperature; 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.2005.1463467

Filename

1463467