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Perpendicular magnetic anisotropy in CoxMn4−xN (x = 0 and 0.2) epitaxial films and possibility of tetragonal Mn4N phase
- Source :
- AIP Advances, Vol 6, Iss 5, Pp 056201-056201-6 (2016)
- Publication Year :
- 2016
- Publisher :
- AIP Publishing LLC, 2016.
-
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.
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 6
- Issue :
- 5
- Database :
- Directory of Open Access Journals
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.0cf067986c6422fbbcb6b1b3df6ac4c
- Document Type :
- article
- Full Text :
- https://doi.org/10.1063/1.4942548