Heteroepitaxial growth of tetragonal Mn$_{2.7-x}$Fe$_{x}$Ga$_{1.3}$ (0 $\leqslant$ x $\leqslant$ 1.2) Heusler films with perpendicular magnetic anisotropy

Adel Kalache; Anastasios Markou; Susanne Selle; Thomas Höche; Gerhard H. Fecher; Claudia Felser

doi:10.1063/1.4991468

paper

Heteroepitaxial growth of tetragonal Mn $_{2.7 - x}$ Fe $_{x}$ Ga $_{1.3}$ (0 $⩽$ x $⩽$ 1.2) Heusler films with perpendicular magnetic anisotropy

arXiv:1705.10668 · doi:10.1063/1.4991468

Abstract

This work reports on the structural and magnetic properties of Mn $_{2.7 - x}$ Fe $_{x}$ Ga $_{1.3}$ Heusler films with different Fe content x (0 $⩽$ x $⩽$ 1.2). The films were deposited heteroepitaxially on MgO single crystal substrates, by magnetron sputtering. Mn $_{2.7 - x}$ Fe $_{x}$ Ga $_{1.3}$ films with the thickness of 35 nm were crystallized in tetragonal D0 $_{22}$ structure with (001) preferred orientation. Tunable magnetic properties were achieved by changing the Fe content x. Mn $_{2.7 - x}$ Fe $_{x}$ Ga $_{1.3}$ thins films exhibit high uniaxial anisotropy Ku $⩾$ 1.4 MJ/m3, coercivity from 0.95 to 0.3 T and saturation magnetization from 290 to 570 kA/m. The film with Mn $_{1.6}$ Fe $_{1.1}$ Ga $_{1.3}$ composition shows high Ku of 1.47 MJ/m3 and energy product $(B H)_{ma x}$ of 37 kJ/m3, at room temperature. These findings demonstrate that Mn $_{2.7 - x}$ Fe $_{x}$ Ga $_{1.3}$ films have promising properties for mid-range permanent magnet and spintronic applications.

13 pages, 5 figures and 2 tables

Heteroepitaxial growth of tetragonal Mn2.7−x​Fex​Ga1.3​ (0 ⩽ x ⩽ 1.2) Heusler films with perpendicular magnetic anisotropy

Abstract

References in corpus (3)

Heteroepitaxial growth of tetragonal Mn $_{2.7 - x}$ Fe $_{x}$ Ga $_{1.3}$ (0 $⩽$ x $⩽$ 1.2) Heusler films with perpendicular magnetic anisotropy