Thicknessdependences of the thermoelectric properties of Sn-doped single crystal Biwires
A.Nikolaeva1,2, D. Gitsu1, T. Huber3, L. Konopko1
Thin Bi wires dopedwith Sn (0.02at%) are obtained in a glass cover with diameters (1*102
The electricalconductivity, magnetoresistance, Seebeck coefficient and power factor ofSn-doped Bi- wires at the temperature interval 4.2-300K were studied independence on diameter and elastic stretch.
At the elasticstretch of wires there occurs qualitative change of the FS topology –transition from one ellipsoidal FS to the two-ellipsoidal one, that was surelyregistered by the Sh.d.H. oscillations. In the process of this transition thepower factor and its dependence on temperature and magnetic field weremeasured.
It was found that theSeebeck coefficient in the rang 150-70K achieves the maximal value 90
Let us note that theSeebeck coefficient in the temperature range 150-60K is positive and the powerfactor is practically constant value.
This work is supported by Civilian Research andDevelopment Foundation for the Independent States of the Former Soviet Union(CRDF) # MP2 – 3019.