New insight on the Mössbauer spectra for Fe16N2 thin films with high saturation magnetization

Xiaowei Zhang, Kiyoshi Nomura, Jian Ping Wang

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Abstract

Mössbauer spectroscopy was conducted on partially ordered Fe16N2 thin films. Besides the dominant polarized core-s electron Fermi contact term, valence electron contribution was counted as a necessity for the explanation of a combination of a high magnetic moment and a relatively low magnetic hyperfine splitting, which were obtained on Fe16N2 thin films with both GaAs and MgO substrates. Essentially, the "cluster + atom" model was applied to understand the high degree hybridization of s-p-d electron, which allows the increase of the positive valence electron contribution and the decrease of the total hyperfine field.

Original languageEnglish (US)
Article number120907
JournalJapanese Journal of Applied Physics
Volume58
Issue number12
DOIs
StatePublished - Jan 1 2019

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