Some Notes on Debye-Waller Factors of Molecular Glassy Materials

Some Notes on Debye-Waller Factors of Molecular Glassy Materials
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关于分子玻璃材料德拜-沃勒因子的一些注记

DOI:
10.1209/0295-5075/24/7/007
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发表时间:
1993
期刊:
EPL
影响因子:
1.8
通讯作者:
T. Mason
T. Mason
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
F. Bermejo;M. García;B. Fåk;J. Alonso;J. Martínez;T. Mason

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讨论了两种代表性玻璃(甲醇和硒)的德拜-沃勒 (DWF) 和兰姆-穆斯堡尔 (LMF) 因子。相干函数的波矢依赖性表明存在明显的精细结构。特别是,显示了在波矢量远低于 Qp 时 DWF 的 Q 依赖性的最大值。还评估了内部低频运动对非相干准弹性散射产生的 LMF 的影响。
The Debye-Waller (DWF) and Lamb-Mossbauer (LMF) factors for two representative glasses (methanol and selenium) are discussed. The wave vector dependence of the coherent functions shows the presence of noticeable fine structure. In particular, a maximum in the Q-dependence of the DWF at wave vectors well below Qp is shown. An assessment on the effects of internal, low-frequency motions on LMF derived from incoherent quasi-elastic scattering is also made.