Journal of Northeastern University ›› 2013, Vol. 34 ›› Issue (8): 1109-1112.DOI: -

• Materials & Metallurgy • Previous Articles     Next Articles

Effect of DC Gradient Magnetic Field on Thermoelectric Power of Al Alloys

ZHANG Jianfeng1,2, LE Qichi2, BA Qixian2, CUI Jianzhong2   

  1. 1School of Sciences, Northeastern University, Shenyang 110819, China; 2Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China.
  • Received:2012-12-24 Revised:2012-12-24 Online:2013-08-15 Published:2013-03-22
  • Contact: LE Qichi
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Abstract: The behavior of thermoelectric power of Al alloys in a DC gradient magnetic field was investigated. The results show that the DC gradient magnetic field leads to a decrease in thermoelectric power of liquid Al289%Fe alloys. When the magnetic field is removed, it takes a period of time for the thermoelectric power to increase gradually to the initial value. With the increasing temperature, the thermoelectric power increases rapidly, the increment increases, and the regression speed increases. This phenomenon is observed in other Al alloys melt, but is not observed both in solidstate pure Al and Al alloys in a gradient magnetic field and liquidstate Al alloys in a homogeneous magnetic field. The theory of localization was used to explain the effect of the magnetic field on the thermoelectric power.

Key words: DC gradient magnetic field, thermoelectric power, aluminum alloy, theory of localization, distribution of electron states

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