On the magnetic properties of systems with low dimensional linkage of VO5 pyramids

被引：12

作者：

Kanada, M

Harashina, H

Tanaka, S

Fukamachi, T

Kobayashi, Y

Sato, M

机构：

[1] Nagoya Univ, Dept Phys, Div Sci Mat, Chikusa Ku, Nagoya, Aichi 4648602, Japan

[2] Saga Univ, Dept Phys, Saga 8408502, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1998年 / 67卷 / 08期

关键词：

spin gap; edge-sharing VO5 pyramids; NMR; magnetic susceptibility;

D O I：

10.1143/JPSJ.67.2904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

[N(CH3)(4)]V3O7, (en)(2)ZnV6O14 (en=ethylenediamine) and (C6H14N2)V6O14. H2O With edge-sharing VO5 chains have been prepared hydrothermally and studied by magnetic susceptibility measurements and by NMR. Observed magnetic properties, which indicate the existence of the spin gap; can be explained by a model of isolated spin dimers of V4+ ions, where a very large exchange interaction J exists only between the electrons at V sites within two edge-sharing VO5 pyramids whose apical oxygens are on the same side of the basal planes. It can be understood by considering the kinetic exchange mechanism acting between the electrons in the xy orbitals.

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收藏

页码：2904 / 2909

页数：6

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