Study on the Temperature Dependence of ^<87>Rb Electric Field Gradients in RbDSO_4 by NMR
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概要
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The second order quadrupole shifts of ^<87>Rb nuclear magnetic resonance in single crystals of RbDSO_4 are measured from 18℃ to -100℃ and are analysed by Volkoff method. In paraelectric phase there are two inequivalent electric field gradients (EFG), one of which hardly shows the temperature dependence and the other increases slightly with decreasing temperature. In ferroelectric phase (T_c=-22℃) each component of the EFG tensors splits into two components. Their splittings change as (T_c-T)^β, where β for each component of the EFG tensor takes the value in the range from 0.28 to 0.39. The orientations of the principal axes of EFG in ferroelectric phase are found to change with temperature. The principal coordinate system which shows almost no temperature dependence in magnitude of the quadrupole coupling constant rotates about the principal z axis by the angle of 75° over the temperature range studied.
- 社団法人日本物理学会の論文
- 1974-03-15
著者
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Kasahara Masaru
Research Institute Of Applied Electricity Hokkaido University
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Kasahara Masaru
Research Institute For Electronic Science Hokkaido University
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Tatsuzaki Itaru
Research Institute Of Applied Electricity Hokkaido University
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Kasahara Masaru
Reseach Institute For Electronic Science Hokkaido University
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