THERMOELECTRIC-POWER OF BULK SPECIMENS OF THE SYSTEM BI1-XTEX

被引:11
作者
IBRAHIM, MM [1 ]
AFIFY, N [1 ]
HAFIZ, MM [1 ]
MAHMOUD, MA [1 ]
机构
[1] UNIV ASSIUT,FAC SCI,DEPT PHYS,ASSIUT,EGYPT
关键词
Bi[!sub]1 -x[!/sub]Te[!sub]x[!/sub; microstructure; Seebeck coefficient; thermoelectric power; X-ray diffraction;
D O I
10.1016/0022-3697(90)90054-J
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The thermoelectric power of bulk specimens of the system Bi1 - xTex (0.3 ≤ x ≤ 0.6 at.) was studied. The effects of Te content, temperature and time of annealing were considered. For most of the compositions considered, the activation of holes seemed predominant. The electron activations, as well as mixed activations, seemed dependent on Te content and the conditions of annealing. Compensation semiconductor behaviour could also be observed. However, both the value and polarity of the Seebeck coefficient seemed dependent on Te content, conditions of annealing and the temperature of measurement. © 1990.
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页码:253 / 258
页数:6
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