Electronic and magnetic properties of 3d transition metal-doped strontium clusters: Prospective magnetic superatoms

被引：15
|
作者：
Chauhan, Vikas [1 ]
Sen, Prasenjit [1 ]
机构：
[1] Harish Chandra Res Inst, Allahabad 211019, Uttar Pradesh, India
来源：
CHEMICAL PHYSICS | 2013年 / 417卷
关键词：
Atomic cluster; Shell model; Magnetic superatom; TOTAL-ENERGY CALCULATIONS; SHELL STRUCTURE; PHOTOELECTRON-SPECTROSCOPY; IONIZATION-POTENTIALS; STABILITY; ELECTROPHILICITY; REACTIVITY;
D O I：
10.1016/j.chemphys.2013.03.019
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Structural, electronic and magnetic properties of 3d transition metal doped strontium clusters are studied using first-principles electronic structure methods based on density functional theory. Clusters with enhanced kinetic and thermodynamic stability are identified by studying their hardness, second order energy difference and adiabatic spin excitation energy. CrSr9 and MnSr10 are found to have enhanced stability. They retain their structural identities in assemblies, and are classified as magnetic superatoms. A qualitative understanding of the magnetic coupling between two cluster units is arrived at. Reactivity of these superatoms with O-2 molecule is also studied. Prospects for using these magnetic superatoms in applications are discussed. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：37 / 44
页数：8
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