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Phonon dispersion relation measurements on zircon, ZrSiO4

机译:锆石,ZrSiO4上的声子色散关系测量

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Zircon, ZrSiO4, is a geophysically important mineral for which a knowledge of the phonon spectra and interatomic potentials would be very useful for modeling the thermodynamic properties at high temperatures and high pressures. We have carried out extensive phonon studies in zircon using the triple axis spectrometer 1T1 at LLB, Saclay, which extend previous measurements to several branches not yet studied, in particular at high energy transfer up to 85meV. The data of the phonon frequencies and the crystal structure have been used to refine an interatomic potential with a lattice dynamical shell model. The model calculations produce a very good description of the available data on the phonon density of states measured on a polycrystalline sample. (c) 2006 Elsevier B.V. All rights reserved.
机译:锆石ZrSiO4是一种地球物理上重要的矿物,其声子光谱和原子间电势的知识对于模拟高温和高压下的热力学性质非常有用。我们使用萨克拉(Saclay)LLB的三轴光谱仪1T1在锆石中进行了广泛的声子研究,将先前的测量范围扩展到了尚未研究的多个分支,特别是在高达85meV的高能量转移下。声子频率和晶体结构的数据已用于通过晶格动力学壳模型细化原子间电势。模型计算很好地描述了在多晶样品上测得的声子密度的可用数据。 (c)2006 Elsevier B.V.保留所有权利。

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