Manipulation of magnetic anisotropy in Irn+1 clusters by Co atom

Gui-Xian Ge, Hong-Xia Yan, Jue-Ming Yang, Long Zhou, Jian-Guo Wan, Ji-Jun Zhao and Guang-Hou Wang

Physica A: Statistical Mechanics and its Applications, 2016, vol. 453, issue C, 194-202

Abstract: Based on the first principles calculations, we have investigated the magnetic properties of Irn+1 clusters modulated by Co atoms. The research conclusions show that the amplitude of magnetic anisotropy energy (MAE) and magnetization direction of the small Irn+1 can be manipulated by Co atom if we can control the size very precisely. Such regulatory mechanism of MAE is ascribed to the distributing variation of Ir-5d orbits around the Fermi level induced by Co atom. More importantly, the colossal MAE values, 67.4 meV/atom, 40.26 meV/atom and 91.37 meV/atom, can be obtained for Ir2, Ir4, and CoIr clusters, respectively. Such high values provide a promising avenue for developing high-density magnetic storage units at sub-nanometer size.

Keywords: The first principles calculation; Irn+1 and CoIrn clusters; Magnetic anisotropy (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:453:y:2016:i:c:p:194-202

DOI: 10.1016/j.physa.2016.02.050

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