Effect of lattice distortion on magnetic and electronic state of α″-Fe16N2

Satoshi Okamoto, Osamu Kitakami, Yutaka Shimada

Research output: Contribution to journalConference article

11 Citations (Scopus)

Abstract

We have studied the correlation of the magnetic moment and electronic state of α″-Fe16N2 with the lattice distortion. The epitaxial (α″+α′)-Fe16N2 films were fabricated on Ag(001) underlayers by sputter beam method. With decreasing the film thickness, the unit cell volume of α″-Fe26N2 increased and distinct enhancement of the magnetic moment up to 2.8μB/Fe atom was found. The precisely determined x-ray diffraction intensity ratio Iα″(002)/Iα″(006) apparently reduced with increase of the unit cell volume. From our theoretical calculations, reduction of Iα″(002)/Iα″(006) means increase of the valency of N atoms in α″-Fe16N2. Therefore, it is considered that increase of the magnetic moment of α″-Fe16N2 is attributed to the charge transfer from N to Fe due to lattice expansion effect. This is the first observation showing close relationship between the electronic state and the magnetic moment of α″-Fe16N2.

Original languageEnglish
Pages (from-to)4952-4954
Number of pages3
JournalJournal of Applied Physics
Volume85
Issue number8 II A
DOIs
Publication statusPublished - 1999 Apr 15
EventProceedings of the 43rd Annual Conference on Magnetism and Magnetic Materials - Miami, FL, United States
Duration: 1998 Nov 91998 Nov 12

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Effect of lattice distortion on magnetic and electronic state of α″-Fe<sub>16</sub>N<sub>2</sub>'. Together they form a unique fingerprint.

  • Cite this