Perpendicular magnetic anisotropy in CoxMn4−xN (x = 0 and 0.2) epitaxial films and possibility of tetragonal Mn4N phase

• Ito, Keita

• Yasutomi, Yoko

• Kabara, Kazuki

• Gushi, Toshiki

• Higashikozono, Soma

• TOKO, Kaoru

• Tsunoda, Masakiyo

• SUEMASU, Takashi

Bibliographic Information

Other Title

• Perpendicular magnetic anisotropy in Co<i>x</i>Mn4−<i>x</i>N (<i>x</i> = 0 and 0.2) epitaxial films and possibility of tetragonal Mn4N phase

Abstract

We grow 25-nm-thick Mn4N and Co0.2Mn3.8N epitaxial films on SrTiO3(001) by molecular beam epitaxy. These films show the tetragonal structure with a tetragonal axial ratio c/a of approximately 0.99. Their magnetic properties are measured at 300 K, and perpendicular magnetic anisotropy is confirmed in both films. There is a tendency that as the Co composition increases, an anisotropy field increases, whereas saturation magnetization and uniaxial magnetic anisotropy energy decrease. First-principles calculation predicts the existence of tetragonal Mn4N phase. This explains the c/a ∼ 0.99 in the Mn4N films regardless of their film thickness and lattice mismatch with substrates used.

Journal

• AIP Advances

  AIP Advances 6 (5), 056201-, 2016-05

  American Institute of Physics

Keywords

• General Physics and Astronomy

Details

• CRID: 1050001202560270336
• NII Article ID: 120007135362
• DOI: 10.1063/1.4942548
• ISSN: 21583226
• HANDLE: 2241/00143390
• Web Site: https://tsukuba.repo.nii.ac.jp/records/38720
• Web Site: https://pubs.aip.org/aip/adv/article-pdf/doi/10.1063/1.4942548/12847199/056201_1_online.pdf
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN