Alternating antiferromagnetic and ferromagnetic exchange interactions in the S=1 Heisenberg chain. Theory and magnetic properties

被引：22

作者：

BorrasAlmenar, JJ

ClementeJuan, JM

Coronado, E

Lloret, F

机构：

[1] Depto. de Química Inorganica, Facultad de Quimica, Universidad de Valencia, C / Doctor Moliner 50, 46100 Burjassot, Valencia

来源：

CHEMICAL PHYSICS LETTERS | 1997年 / 275卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(97)00698-2

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：

We focus on the magnetic properties of the S = 1 Heisenberg chain with alternating antiferromagnetic and ferromagnetic exchange interactions J(1) and J(2). The magnetic behavior of this system is calculated as a function of the alternation parameter alpha = J(2)/\J(1)\, from a general numerical procedure based on closed spin chains of increasing length. These theoretical results are fitted to rational unified expressions, which are subsequently used to describe the magnetic behavior of a nickel (II) complex, [Ni(bipy)(N-3)(2)](n), exhibiting an alternating chain structure with a dominant ferromagnetic exchange. (C) 1997 Published by Elsevier Science B.V.

引用

页码：79 / 84

页数：6

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