Dependency of mechanochemical reactions forming complex oxides on the crystal structures of starting oxides

Qiwu Zhang, Jinfeng Lu, Jun Wang, F. Saito

研究成果: Article査読

15 被引用数 (Scopus)

抄録

Mechanochemical reactions applicable to syntheses of perovskite-type compounds, La MO3, where M is trivalent metals, are taken as examples to investigate effects of crystal structures of starting materials, M 2O3, on the reactions. The investigated oxides M 2O3 are categorized into two groups: one is the corundum structure and the other the non-corundum structure. Under the experimental conditions, it has been found that the oxides with non-corundum structure react easily with La2O3 by their co-grinding at room temperature to form the corresponding compounds. On the contrary, none of such reactions can be occurred for the oxides with corundum structure. The difference has been discussed based on the grinding-induced phase transformation from loose packing of atoms to close packing of atoms. Based on the results, the extension to the synthesis of other compounds such as CrO2 is presented.

本文言語English
ページ(範囲)5527-5530
ページ数4
ジャーナルJournal of Materials Science
39
16-17
DOI
出版ステータスPublished - 2004 8 1

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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