Electrical Resistivity Peculiarities of the Nanograined Bi2Te3 Material

Authors O.N. Ivanov , R.A. Lyubushkin , O.N. Soklakova

Belgorod State University, 85, Pobedy St., 308015 Belgorod, Russia

Issue Volume 7, Year 2015, Number 4
Dates Received 30 September 2015; published online 24 December 2015
Citation O.N. Ivanov, R.A. Lyubushkin, O.N. Soklakova, J. Nano- Electron. Phys. 7 No 4, 04053 (2015)
PACS Number(s) 72.10.Fk, 72.15. – v
Keywords Nanograined materials (2) , Electrical resistivity (5) , The Hall effect, Size effects.
Annotation The hot quasiisostaic pressure method was applied to sinter the nanograined Bi2Te3 material. The samples with various mean grain size of 64, 61, 56 and 51 nm were prepared by changing the pressure of sintering. It was found that the specific electrical resistivity of the material under study increases when the mean grain size decreases. The Hall effect was measured to extract the concentration and mobility values of the charge carries. It was found that the electron concentration decreases as the mean grain size decreases while the electron mobility has extreme dependence on the grain size.

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