Increased magnetic moment induced by lattice expansion from α-Fe to α-Fe8N

Author

Dirba, I. ; Komissinskiy, P. ; Helbig, T. ; Alff, L. ; Gutfleisch, O.

Author_Institution

Inst. of Mater. Sci., Tech. Univ. Darmstadt, Darmstadt, Germany

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

Here we provide experimental evidence by the careful preparation of thin films with controlled nitrogen content and induced tetragonality as a consequence. We have correlated the increase of the unit cell volume in expanded bcc Fe buffer-free and epitaxial thin films with their accurately measured magnetic moment, in-plane saturation field, magnetic domain patterns and change in electronic structure by systematically changing the amount of added nitrogen, allowing a comparison to the theoretical predictions.

Keywords

band structure; iron; iron compounds; magnetic anisotropy; magnetic domains; magnetic epitaxial layers; magnetic moments; Fe; Fe₈N_x; controlled nitrogen content; electronic structure; epitaxial thin films; expanded bcc Fe buffer-free thin films; in-plane saturation field; induced tetragonality; lattice expansion; magnetic domain patterns; magnetic moment; Anisotropic magnetoresistance; Iron; Lattices; Magnetic domains; Magnetic moments; Nitrogen;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7157447

Filename

7157447