Open AccessEffect of heat treatment on the galvanomagnetic properties of bulk nanostructured samples of Bi85Sb15 solid solution
Author(s) -
M. M. Tagiyev,
G. D. Abdinova,
I. A. Abdullayeva
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2103/1/012118
Subject(s) - materials science , thermal conductivity , extrusion , solid solution , thermal treatment , electrical resistivity and conductivity , analytical chemistry (journal) , thermal , nanoparticle , thermodynamics , composite material , metallurgy , nanotechnology , chemistry , chromatography , physics , electrical engineering , engineering
Extruded bulk nanostructured samples of Bi 85 Sb 15 solid solution from particles with average sizes ∼ 2.10 5 ; 950; 650; 380; 30 and 15 nm were obtained and investigated their galvanomagnetic properties in the range of ∼ 77-300 K. Were investigated samples that have not passed heat treatment, and the same samples that have passed heat treatment. It was found that the electrical and thermal properties of Bi 85 Sb 15 solid solution samples significantly depend on the size of nanoparticles and post-extrusion heat treatment. Heat treatment leads to a decrease in the concentration of current carriers and to an increase in the mobility of current carriers and the total thermal conductivity of the samples under study, which is mainly due to the electronic component of thermal conductivity. The change in thermal parameters is satisfactorily explained by changes in occurring in the structure of samples during extrusion and heat treatment and correlates well with changes in the electrical parameters of these processes.