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

Yuko Ichiyanagi, Hiroshi Kondoh, Toshihiko Yokoyama, Kaoru Okamoto, Kensuke Nagai, Toshiaki Ohta

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)345-350
Number of pages6
JournalChemical Physics Letters
Volume379
Issue number3-4
DOIs
Publication statusPublished - 2003 Sep 26
Externally publishedYes

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Nanoclusters
X ray absorption
nanoclusters
X ray absorption fine structure spectroscopy
Monolayers
fine structure
spectroscopy
ferromagnetism
contraction
x rays
Ferromagnetism
Exchange interactions
spacing
magnetic properties
Magnetic properties
Ions
atoms
Atoms
ions
interactions

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

X-ray absorption fine-structure study on the Ni(OH)2 monolayer nanoclusters. / Ichiyanagi, Yuko; Kondoh, Hiroshi; Yokoyama, Toshihiko; Okamoto, Kaoru; Nagai, Kensuke; Ohta, Toshiaki.

In: Chemical Physics Letters, Vol. 379, No. 3-4, 26.09.2003, p. 345-350.

Research output: Contribution to journalArticle

Ichiyanagi, Y, Kondoh, H, Yokoyama, T, Okamoto, K, Nagai, K & Ohta, T 2003, 'X-ray absorption fine-structure study on the Ni(OH)2 monolayer nanoclusters', Chemical Physics Letters, vol. 379, no. 3-4, pp. 345-350. https://doi.org/10.1016/j.cplett.2003.08.051
Ichiyanagi, Yuko ; Kondoh, Hiroshi ; Yokoyama, Toshihiko ; Okamoto, Kaoru ; Nagai, Kensuke ; Ohta, Toshiaki. / X-ray absorption fine-structure study on the Ni(OH)2 monolayer nanoclusters. In: Chemical Physics Letters. 2003 ; Vol. 379, No. 3-4. pp. 345-350.
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