Concentration and temperature dependence of the thermal expansion coefficient in the superionic phase of Cu2-xSe (CROSBI ID 208703)
Prilog u časopisu | kratko priopćenje | međunarodna recenzija
Podaci o odgovornosti
Aviani, Ivica ; Vučić, Zlatko ; Horvatić, Mladen ; Gladić, Jadranko
engleski
Concentration and temperature dependence of the thermal expansion coefficient in the superionic phase of Cu2-xSe
Thermal expansion coefficient β of the Cu2−xSe sample with 1.975 >= 2 − x >= 1.801 is measured in the temperature interval from 300 to 570 K. In the high-temperature phase the data are well fitted by the expression β =P1+P2/T^2 where P1 is weakly and P2 strongly dependent on x. In a simple configurational model the lattice parameter is increased only by those configurations where Cu vacancies (introduced by the deviation from stoichiometry x) are nearest neighbours. The model reproduces the temperature and qualitatively also the concentration dependence of β.
superionic conductor ; copper selenide ; thermal expansion coefficient
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Podaci o izdanju
64 (10)
1987.
1317-1319
objavljeno
0038-1098
1879-2766
10.1016/0038-1098(87)90633-8