微粒子の格子振動の回折的研究

概要

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Diffraction studies on lattice vibration of fine particles of size less than a few hund-red angstroms in diameter are recently developed. The experimental method on the basis of the diffraction theory and the results in X-ray diffraction are described in detail. From the X-ray diffraction experiment on the temperature dependence of the integrated intensity in the Debye-Scherrer rings, the X-ray Debye temperature Θ<SUB>M</SUB> 156 K has been obtained for the fine particles of silver, whose size was about 150 Å in diameter. The Debye temperature of the fine silver particles is much lower than that of the bulk silver crystal, i. e. Θ<SUB>M</SUB>=212 K. This fact leads to the conclusion that the softening of lattice vibration is observed in the fine silver particles.
日本結晶学会の論文