The origin of the sharpness of the maximum in the phonon thermal conductivity of (Ta1-xNbxSe4)2I at low temperature (CROSBI ID 463045)
Prilog sa skupa u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Lasjaunias, Jean Claude ; Smontara, Ana ; Maynard, Roger ; Levy, Francis
engleski
The origin of the sharpness of the maximum in the phonon thermal conductivity of (Ta1-xNbxSe4)2I at low temperature
Thermal conductivity (K) studies are reported on alloys of the linear-chain compound (TaSe_4)_2I either pure or doped with Nb, in the low-T regime. K(T) varies like T^3 at very low temperatures, in agreement with the boundary scattering regime. At higher T, there is a deviation from T^3, towards T^n with n less than or similar to 2, for doped samples, which can be explained by a scattering process related to impurities. A sharp anomaly appears in the case of pure and doped (1 at% Nb) alloys around 1 and 1.8 K, respectively, which can be related to very unusual phonon properties of these materials and suggests a possible explanation by the Poiseuille effect.
thermal conductivtiy ; scattering processes ; (TaSe4)2I
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Podaci o prilogu
74-76.
1996.
nije evidentirano
objavljeno
10.1016/0921-4526(95)00654-0
Podaci o matičnoj publikaciji
Physica. B, Condensed matter
De Boer, F.R. ; Fisk, Z. ; Jochemsen, R. ; Lander, G.H.
Elsevier
0921-4526
1873-2135
Podaci o skupu
Nepoznat skup
pozvano predavanje
29.02.1904-29.02.2096
Povezanost rada
Fizika