Mn3GaC inverse perovskite thin films by magnetron sputtering from elemental targets. (28th October 2020)

• Record Type: Journal Article
• Authors: Petruhins, Andrejs; Ingason, Arni Sigurdur; Olafsson, Sveinn; Rosen, Johanna
• Is Part Of: Materials research express. Volume 7:Number 10(2020)
• Publication Date: 2020-10-28
• Subjects: inverse perovskite -- magnetism -- first principles calculations -- thin films -- magnetic ground state; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/abc193
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: We have deposited epitaxial thin films of the inverse perovskite Mn3 GaC using magnetron sputtering from elemental targets. Two substrates were used, MgO (111) and (100), resulting in corresponding orientation of the Mn3 GaC thin films. Both samples displayed magnetic properties consistent with an AFM to FM transition at ∼170 K and a Curie temperature around 265 K, evaluated with vibrating sample magnetometry (in-plane measurements). These two ground states are further supported by first principles calculations. Based on that the two orientations of Mn3 GaC display very similar magnetic properties, it can be concluded that shape anisotropy dominates over the material's easy axis.