One-pot synthesis of co-substituted manganese oxide nanosheets and physical properties of lamellar aggregates

Kazuya Kai, Marine Cuisinier, Yukihiro Yoshida, Gunzi Saito, Yoji Kobayashi, Hiroshi Kageyama

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Co-substituted manganese oxide nanosheets, (Mn 1-xCo x)O 2 have been synthesized in the form of a colloidal suspension via a simple one-pot method. Substitution effects on the structural, optical absorption, and magnetic properties are investigated for the nanosheets and their lamellar aggregates. The composition of the (Mn 1-xCo x)O 2 nanosheets can be controlled continuously by adjusting the molar ratio of the starting materials. The solubility limit is x ∼ 0.20 based on the cell volume. In the 0.00 ≤ x ≤ 0.20 range, the band gap energy, magnetic moment, and Weiss temperature change systematically with x. The charge density of the (Mn,Co)O 2 layer is independent of x (i.e., [(Mn,Co)O 2] 0.2-) and the cobalt ions are trivalent in low-spin state.

Original languageEnglish
Pages (from-to)3855-3859
Number of pages5
JournalMaterials Research Bulletin
Volume47
Issue number11
DOIs
Publication statusPublished - Nov 2012
Externally publishedYes

Fingerprint

trivalent ions
Manganese oxide
manganese oxides
Nanosheets
colloids
optical absorption
cobalt
solubility
Physical properties
physical properties
magnetic moments
adjusting
substitutes
magnetic properties
synthesis
cells
Cobalt
Charge density
Magnetic moments
Light absorption

Keywords

  • A. Ceramics
  • A. Layered compounds
  • A. Thin films
  • B. Chemical synthesis
  • C. X-ray diffraction

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

One-pot synthesis of co-substituted manganese oxide nanosheets and physical properties of lamellar aggregates. / Kai, Kazuya; Cuisinier, Marine; Yoshida, Yukihiro; Saito, Gunzi; Kobayashi, Yoji; Kageyama, Hiroshi.

In: Materials Research Bulletin, Vol. 47, No. 11, 11.2012, p. 3855-3859.

Research output: Contribution to journalArticle

Kai, Kazuya ; Cuisinier, Marine ; Yoshida, Yukihiro ; Saito, Gunzi ; Kobayashi, Yoji ; Kageyama, Hiroshi. / One-pot synthesis of co-substituted manganese oxide nanosheets and physical properties of lamellar aggregates. In: Materials Research Bulletin. 2012 ; Vol. 47, No. 11. pp. 3855-3859.
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