Nuclear Magnetic Resonance and X-Ray Studies of Potassium Ferrocyanide Trihydrate Crystal

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概要

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• The atomic coordinates of one previously unknown water oxygen in potassium ferrocyanide trihydrate are determined by X-ray structure analysis in the paraelectric phase at room temperature. In K_4Fe(CN)_6・3H_20 and its isomorphous K_4Ru(CN)_6・3H_20 proton magnetic resonance patterns start to narrow at about -140℃, and definite change in both spectra occurs in the same temperature region around -40℃, about twenty degrees below the respective Curie points. Angular dependence of peak separations has been measured at liquid nitrogen temperature where all water molecules are effectively rigid. Direction angles of three proton-proton vectors with respect to the crystallographic a, b and c axes are, respectively, α_0=134°, β_0=49°, γ_0=73°, α_0=90°β_0=90°, γ_0=O°and α_0=0°, β_0=90°, γ_0=90°.A possible molecular mechanism for the ferroelectric origin is discussed.

• 社団法人日本物理学会の論文
• 1964-04-05

著者

• Wada Takeo

  Institute Of Scientific And Zindustrial Research Osaka University

• Kiriyama Hideko

  Institute Of Scientific And Zindustrial Research Osaka University

• Kiriyama Hideko

  Institute Of Scientific And Industrial Research Osaka University

• Kiriyama Ryoiti

  Institute Of Scientific And Industrial Research Osaka University

• Kiriyama Ryoiti

  Institute Of Scientific And Zindustrial Research Osaka University

• Niizeki Nobukazu

  Dielectric Materials Research Section Electrical Communication Laboratory Nippon Telegraph And Telep

• Hirabayashi Hisao

  Dielectric Materials Research Section Electrical Communication Laboratory Nippon Telegraph And Telep

• Kiriyama R.

  Institute of Scientific and zindustrial Research, Osaka University

関連論文

• One-Dimensional Nuclear Relaxasion in Spin 1/2 Systems
• Nuclear Magnetic Resonance and X-Ray Studies of Potassium Ferrocyanide Trihydrate Crystal
• Electrical and Magnetic Properties of Cu_3Se_2 and Some Related Compounds

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