VIBRATIONAL-RELAXATION OF DAVYDOV COMPONENTS OF THE 940 CM-1 MODE IN KCLO4 CRYSTAL

被引：7

作者：

BINI, R

FOGGI, P

SALVI, PR

SIMONE, R

SCHETTINO, V

机构：

[1] Dipartimento di Chimica, Universita' di Firenze

来源：

JOURNAL OF MOLECULAR STRUCTURE | 1990年 / 219卷

关键词：

D O I：

10.1016/0022-2860(90)80029-J

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on the temperature dependent linewidth of the B3u component of gn1 mode in KClO4 crystal measured by FTIR spectroscopy. These results are compared with previous ones obtained for the Ag component. At temperatures higher then 80 K both components have a linear dependence on T showing that three-phonon scattering relaxation processes are driving the decay of this mode. The difference in the residual linewidths at low temperature (20 K) is interpreted in terms of different anharmonic couplings between the two componens and the thermal bath. © 1990.

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页码：43 / 48

页数：6

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