Epitaxial growth and magnetic properties of NixFe4- xN (x = 0, 1, 3, and 4) films on SrTiO3(001) substrates

Fumiya Takata, Keita Ito, Soma Higashikozono, Toshiki Gushi, Kaoru Toko, Takashi Suemasu

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10 Citations (Scopus)

Abstract

The 20-60 nm-thick epitaxial NixFe4- xN (x = 0, 1, 3, and 4) films were successfully fabricated on SrTiO3(001) single-crystal substrates by alternating the substrate temperature (Tsub), and their crystalline qualities and magnetic properties were investigated. It was found that the crystal orientation and the degree of order of N site were improved with the increase of Tsub for x = 1 and 3. The lattice constant and saturation magnetization decreased as the Ni content increased. This tendency was in good agreement with first-principle calculation. Curie temperature of the Ni3FeN film was estimated to be 266 K from the temperature dependence of magnetization. The Ni4N film was not ferromagnetic but paramagnetic due to its low degree of order of N site.

Original languageEnglish
Article number083907
JournalJournal of Applied Physics
Volume120
Issue number8
DOIs
Publication statusPublished - 2016 Aug 28

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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