X-ray absorption fine-structure study on the Ni(OH)2 monolayer nanoclusters

被引：35

作者：

Ichiyanagi, Y

Kondoh, H

Yokoyama, T

Okamoto, K

Nagai, K

Ohta, T ^{[1
]}

机构：

[1] Univ Tokyo, Dept Chem, Tokyo 1130033, Japan

[2] Yokohama Natl Univ, Dept Phys, Yokohama, Kanagawa 2408501, Japan

[3] Inst Mol Sci, Okazaki, Aichi 4448585, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 379卷 / 3-4期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/j.cplett.2003.08.051

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：

The local structure around Ni ion for Ni(OH)(2) Monolayer nanocluster (Ni-MNC) was studied by Ni K-edge X-ray absorption fine-structure spectroscopy (XAFS). XAFS analyses were consistent with the monolayer formation of the nanoclusters. We found that the Ni-Ni distance in the monolayer plane exhibits a significant contraction compared to that in bulk Ni(OH)(2), while the spacing between the Ni and O layers are rather expanded. Such a structural change is discussed in relation to the magnetic property of the Ni-MNC, which exhibits ferromagnetism below 10 K with a higher exchange interaction between the in-plane Ni atoms than that of the bulk Ni(OH)(2). (C) 2003 Published by Elsevier B.V.

引用

页码：345 / 350

页数：6