高度に分子配向の乱れた結晶
スポンサーリンク
概要
- 論文の詳細を見る
Molecular crystals and ionic crystals which consist of polyatomic groups exhibit “orientational transitions” accompanied by an orientational disorder of polyatomic groups. Some topics on X-ray studies of the orientational disorder, which have been studied by the present author and his collaborators in a recent decade, are summarized.<BR>The observed X-ray diffuse scatterings due to the orientational disorder of NO<SUB>3</SUB>-ions in the CsCI-type cubic phases of NH<SUB>4</SUB>NO<SUB>3</SUB> and RbNO<SUB>3</SUB> are analysed on the basis of “12-orientation” model. The intensity formulae of X-ray diffuse scattering for polyorientation system, which have been given by Matsubara (Zernikes theory), by Naya (random phase approximation) and recently by Nagai (Bethes method), are discussed.<BR>Anomalies of X-ray temperature diffuse scatterings due to C<SUB>44</SUB> mode are observed in the NaCI-type cubic phases of RbNO<SUB>3</SUB> and NaCN. By taking account of a linear coupling between the orientations and acoustic phonons, the observed temperature dependences of the diffuse scatterings are explained.
- 日本結晶学会の論文
著者
関連論文
- 5p-B-6 KNO_3の相転移のX線的研究 II
- 30p-E-14 分子配向の乱れた結晶のX線散漫散乱
- KNO_3の相転移(I) : 熱膨張(熱膨張連続記録X-ray Diffractometer) : X線電子線
- 31a-L-12 KNO_3の相転移のX線的研究
- 5p-P-9 シアノアダマンタンCubic相におけるX線散漫散乱
- 29a-L-4 NH_4NO_3の準安定相転移(II-V^*-V)
- 29a-L-3 NH_4SCNの相転移
- 12p-H-11 NaClO_4の相転移のX線的研究II
- 30p-E-13 NaClO_4におけるX線散漫散乱
- 30a-H-5 NaCN相転移のX線的研究 III
- 2p-H-10 NaCN相転移のX線的研究 II
- 2a-C-13 RbNO_3の相転移のX線的研究
- 10a-Z-1 NaCN相転移のX線的研究
- 5p-K-13 RbNo_3の相転移(配向と格子歪)
- 3a-A-3 RbNO_3のX線散漫散乱(格子振動と配向不整)
- 5a-P-10 分子回転によるX線散漫散乱の温度変化 : Cubic NH_4NO_3
- 2a-E-6 分子回転と X 線散漫散乱(cubic NH_4NO_3) IV
- NaNO_3の温度散漫散乱 : X線粒子線
- 硝酸塩の温度散漫散乱(X線)
- 7p-K-5 NaNO_3におけるNO_3基の回転的擧動
- KNO_3の相転移(II) : Tc附近の挙動(X線散漫散乱) : X線電子線
- 高度に分子配向の乱れた結晶
- 高度に分子配向の乱れた結晶
- 31a-S-12 NH_4NO_3の準安定相転移 II(31aS 誘電体)
- 29a-BE-3 KNCSの相転移II(29a BE 誘電体)