Origin of spin reorientation transitions in antiferromagnetic MnPt-based alloys

Autor:	Chang, P. -H., Zhuravlev, I. A., Belashchenko, K. D.
Rok vydání:	2018
Předmět:	Condensed Matter - Materials Science
Zdroj:	Phys. Rev. Materials 2, 044407 (2018)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevMaterials.2.044407
Popis:	Antiferromagnetic MnPt exhibits a spin reorientation transition (SRT) as a function of temperature, and off-stoichiometric Mn-Pt alloys also display SRTs as a function of concentration. The magnetocrystalline anisotropy in these alloys is studied using first-principles calculations based on the coherent potential approximation and the disordered local moment method. The anisotropy is fairly small and sensitive to the variations in composition and temperature due to the cancellation of large contributions from different parts of the Brillouin zone. Concentration and temperature-driven SRTs are found in reasonable agreement with experimental data. Contributions from specific band-structure features are identified and used to explain the origin of the SRTs. Comment: 6 pages, 8 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1802.05685 Zobrazit plný text záznamu View this record from Arxiv