Structure and Magnetism of Novel Copper Molybdenum Oxides \eta-CuMoO

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概要

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• Single crystals of the novel copper molybdenum oxides \eta-CuMoO<inf>4</inf>and \beta-Cu<inf>3</inf>Mo<inf>2</inf>O<inf>9</inf>are synthesized by a hydrothermal method. Both oxides have triclinic unit cells (space group P\bar{1}). The lattice constants of \eta-CuMoO<inf>4</inf>are a = 6.352 Å, b = 6.986 Å, c = 7.447 Å, \alpha = 73.53^\circ, \beta = 72.98^\circ, and \gamma = 84.95^\circ; those of \beta-Cu<inf>3</inf>Mo<inf>2</inf>O<inf>9</inf>are a = 7.391 Å, b = 7.587 Å, c = 7.971 Å, \alpha = 67.133^\circ, \beta = 89.67^\circ, and \gamma = 66.20^\circ. \eta-CuMoO<inf>4</inf>contains the Cu<inf>4</inf>O<inf>16</inf>cluster composed of four corner-shared CuO<inf>6</inf>octahedra, while \beta-Cu<inf>3</inf>Mo<inf>2</inf>O<inf>9</inf>contains the Cu<inf>6</inf>O<inf>16</inf>cluster composed of six CuO<inf>4</inf>squares. The magnetic susceptibility reveals that the magnetism of \beta-Cu<inf>3</inf>Mo<inf>2</inf>O<inf>9</inf>reflects the cluster structure.

• 2013-05-15

著者

• Sato Hirohiko

  Department Of Biotechnology Tokyo University Of Agriculture And Technology

• Hara Shigeo

  Department of Physics, Chuo University, Bunkyo, Tokyo 112-8551, Japan

• HARA Shigeo

  Department of Dairy Science, The College of Dairying

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