Raman linewidths calculated as a function of temperature in NaNO(2)

2009-05-01
KARACALİ, HUSEYİN
Yurtseven, Hasan Hamit
Kiraci, Ali
The temperature dependence of the damping constant is calculated for some Raman modes in NaNO(2) using the soft mode-hard mode coupling model and the energy fluctuation model. The damping constant is fitted to the measured Raman bandwidths of those modes, which is well described by the soft mode-hard mode coupling model. The values of the activation energy are extracted from the damping constant for the Raman modes, which are much greater than k(B)T(C) = 0.04 eV for NaNO(2) close to the transition temperature (T(C) = 436 K). This is an indication that NaNO(2) undergoes an order-disorder phase transition. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Citation Formats
H. KARACALİ, H. H. Yurtseven, and A. Kiraci, “Raman linewidths calculated as a function of temperature in NaNO(2),” PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, vol. 246, no. 5, pp. 1124–1131, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48926.