Magnetic behaviour of selected geometries of Pd clusters:: icosahedral versus fcc structures

被引：12

作者：

Aguilera-Granja, F ^{[1
]}

Montejano-Carrizales, JM

Berlanga-Ramírez, EO

Vega, A

机构：

[1] Univ Autonoma San Luis Potosi, Inst Fis Manuel Sandoval Vallarta, San Luis Potosi 78000, SLP, Mexico

[2] Univ Valladolid, Dept Fis Teor Atom & Opt, E-47011 Valladolid, Spain

来源：

PHYSICS LETTERS A | 2004年 / 330卷 / 1-2期

关键词：

magnetic nanostructures; transition-metal clusters; electronic properties; tight-binding methods;

D O I：

10.1016/j.physleta.2004.07.062

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the magnetic proper-ties of free-standing Pd clusters of some selected sizes with different structures which are obtained as the most stable ones using the embedded atom method from an uniform relaxation of different geometrical configurations. The spin-polarized electronic structure and related magnetic properties of those optimized geometries were calculated by solving self-consistently a spd tight-binding Hamiltonian. The magnetic moments obtained in our calculations present an step-like dependence as a function of the exchange parameter in the case of small cluster size and a more complex dependence for larger cluster sizes. We discuss the results in comparison with previous calculations for fcc Pd clusters and with recent experimental findings. (C) 2004 Published by Elsevier B.V.

引用

页码：126 / 130

页数：5

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