LATTICE AND MOLECULAR-DYNAMICS IN (C2H5)4NFEX4 (X = CL, BR)

被引：5
作者：
PARTITI, CSM
RECHENBERG, HR
机构：
[1] Instituto de Fisica, Universidade de São Paulo, São Paulo, 01498
来源：
HYPERFINE INTERACTIONS | 1992年 / 70卷 / 1-4期
关键词：
D O I：
10.1007/BF02397515
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
We have measured the thermal dependence of the f factor and the line shift of the title compounds, in order to determine the (-2) and (+2) moments of the Fe frequency spectrum. The latter is approximated by a superposition of an acoustic-wave band and an intramolecular optical mode. Our results show that both frequency bands are well separated, owing to a relatively weak interaction between tetrahedral units. Optical frequencies thus determined are consistent with Raman data. Debye temperatures were obtained for the low-frequency vibrations of both crystals.
引用
收藏
页码：1075 / 1078
页数：4
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