Hydrogen-Bond Network in Ferroelectric Lithium Trihydrogen Selenite, LiD<SUB>3</SUB>(SeO<SUB>3</SUB>)<SUB>2</SUB> by Deuteron Magnetic Resonance
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概要
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Deuteron magnetic resonance study is made of single crystals of LiD<SUB>3</SUB>(SeO<SUB>3</SUB>)<SUB>2</SUB> between −143°C and 110°C. The electric quadrupole coupling constant, <I>eQq</I>⁄<I>h</I>, the asymmetry parameter, η, and the directions of the principal axes of the field-gradient tensor are determined for each deuteron at room temperature. Three non-equivalent tensors are obtained corresponding to the three non-equivalent fairly strong hydrogen bonds determined by X-ray diffraction. The <I>eQq</I>⁄<I>h</I> and η are 107.8 kc/sec and 0.172 for D<I><SUB>a</SUB></I>, 127.9 kc/sec and 0.154 for D<I><SUB>b</SUB></I>, and 181.1 kc/sec and 0.101 for D<I><SUB>c</SUB></I>, The hydrogen-bond network in LiD<SUB>3</SUB>(SeO<SUB>3</SUB>)<SUB>2</SUB> is determined. The atomic coordinates of deuterons are estimated from the results of the present DMR study. The field-gradient tensor of <SUP>7</SUP>Li is also determined at room temperature. The values of <I>eQq</I>⁄<I>h</I> and η are 33.9 kc/sec and 0.593.
- 社団法人 日本物理学会の論文
社団法人 日本物理学会 | 論文
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