期刊
COMPUTATIONAL MATERIALS SCIENCE
卷 118, 期 -, 页码 112-116出版社
ELSEVIER
DOI: 10.1016/j.commatsci.2016.03.006
关键词
Germanene; Doping; Magnetic storage; Room temperature ferromagnetism; First-principles
资金
- National Science and Technology Major Project of the Ministry of Science and Technology of China [2012ZX04002-012]
Previous works have shown that transition-metal doping was usually used to induce magnetism in host. Germanene is the graphene-like germanium nanosheet, which has been synthesized very recently (Davila et al., 2014). Here we systematically investigate the geometric, electronic and magnetic properties of 3d series transition-metal (Sc-Ni) substitutional doped germanene. We found that the bonding strength of the transition-metal impurities to germanene is rather strong. Magnetism is observed for V, Cr, Mn, Fe and Co doping. Detailed analysis shows that the magnetic moment comes from the localized d orbitals of transition-metal atom. In particular, Mn-substituted system exhibits a largest magnetic moment similar to 3.5 mu(B) even at a very low impurity concentration. We obtain Curie temperature in excess of room temperature for Mn-substituted system in the impurity concentration of 3.125%, indicating the potential for magnetic storage applications. (C) 2016 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据