Effect of substrate temperature on structure, magnetic and electrical transport properties of Mn1.60Ga films. (20th January 2020)

• Record Type: Journal Article
• Authors: Zhang, Yumei; Yang, Chaoqun; Wang, Li; Bai, Yidan; Liu, Sitong; Li, Haibo
• Is Part Of: Materials research express. Volume 7:Number 1(2020)
• Publication Date: 2020-01-20
• Subjects: L10-MnGa -- substrate temperature -- magnetic property -- electrical transport property; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/ab6a58
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: L 10 -MnGa alloys have great application potential in the fields of permanent magnet and spintronics. L 10 -Mn1.60 Ga thin films were prepared on MgO (100) substrates by magnetron sputtering under different substrate temperatures ranging from 200 to 600 °C, and the effect of the substrate temperature on the structure, magnetic and electrical transport properties of the films were observed. The results show that the films deposited at 300–600 °C substrate have good (001) orientation. The coercivity and effective anisotropy of film are enhanced at 400 °C substrate temperature, because the large tensile stress/strain induces a large coercivity and high effective anisotropy. When the substrate temperature increases to 500 °C, and the abnormal Hall resistivity of the film reaches the maximum value. The magnetic and electrical transport properties of the L 10 -Mn1.60 Ga film are improved effectively with an appropriate substrate temperature.