直流磁场作用下液态铝合金热电势的变化

张建锋; 王红玲; 乐启炽; 巴启先; 崔建忠

doi:10.3724/SP.J.1037.2013.00231

金属学报 >

2013 , Vol. 49 >Issue 9: 1069 - 1074

DOI: https://doi.org/10.3724/SP.J.1037.2013.00231

论文

直流磁场作用下液态铝合金热电势的变化

张建锋 ,
王红玲 ,
乐启炽 ,
巴启先 ,
崔建忠

展开

1) 东北大学理学院, 沈阳 110819
2) 东北大学材料电磁过程研究教育部重点实验室, 沈阳 110819

张建锋, 男, 1979年生, 讲师, 博士生

收稿日期: 2013-04-29

修回日期: 2013-07-03

网络出版日期: 2013-09-11

基金资助

国家重点基础研究发展计划项目2013CB632203, 国家自然科学基金项目50974037及国家科技支撑计划项目2012BAF09B01资助

收起

CHANGE OF THERMOELECTRIC POWER OF LIQUID Al ALLOYS CAUSED BY DC MAGNETIC FIELD

ZHANG Jianfeng ,
WANG Hongling ,
LE Qichi ,
BA Qixian ,
CUI Jianzhong

Expand

1) Science College, Northeastern University, Shenyang 110819
2) Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110819

Received date: 2013-04-29

Revised date: 2013-07-03

Online published: 2013-09-11

Fold

摘要

研究了在不同温度下, 直流磁场对铝合金热电势的影响. 结果显示:当施加在样品两端的磁场强度相差较大时, Al－2.89%Fe合金熔体的热电势逐渐降低.撤除磁场作用后, 降低的热电势需要经一段时间,才能缓慢恢复到施加磁场前的初始值. 这种现象,在不同温度、不同成分的铝合金熔体(包括纯Al)中被普遍观察到.样品两端磁感应强度平方差越大, 热电势变化量越大; 在近似均匀磁场作用下,液态铝合金的热电势没有发生变化. 根据弱局域化理论,磁场使电子在传输过程中产生附加相位, 改变了体系中扩展态电子的分布,从而导致合金熔体的热电势发生变化.

关键词： 直流磁场; 热电势; 液态铝合金

本文引用格式

张建锋 , 王红玲 , 乐启炽 , 巴启先 , 崔建忠 . 直流磁场作用下液态铝合金热电势的变化[J]. 金属学报, 2013 , 49(9) : 1069 -1074 . DOI: 10.3724/SP.J.1037.2013.00231

Abstract

The effect of DC magnetic field on the thermoelectric power of Al alloys at different temperatures was investigated in this work. The results showed that if the magnetic field intensity difference between the two ends of the sample was large, it would lead to a decrease in thermoelectric power of liquid Al－2.89% Fe Al alloys. When the magneticfield was removed, it took a period of time for the thermoelectric power to increase gradually to the initial value. This phenomenon had been observed in other Al alloys melt at different temperature. The higher the square difference of magnetic induction was, the more significant thermoelectric power changed. The approximate homogeneous magnetic field had no effect on the thermoelectric power. According to the theory of weak localization, the magnetic field can change the distribution of extended states electrons which contributes to the change of thermoelectric power.

Key words： DC magnetic field; thermoelectric power; liquid Al alloy

参考文献

[1] Giuseppe G, Giuseppe P P. Solid State Physics. Amsterdam: Academic Press, 2006: 419

[2] Huang K, Han R Q. Solid State Physics. Beijing: Higher Education Press, 1988: 228

(黄昆, 韩汝琦. 固体物理学. 北京: 高等教育出版社, 1988: 228)

[3] Anderson P W. Phys Rev, 1958; 109: 1492

[4] Kramer B, Mackinnon A. Rep Prog Phys, 1993; 56: 1469

[5] Soukoulis C M, Wang X, Li Q, Sigalas M. Phys Rev Lett, 1999; 82: 668

[6] Spisak B J, Paja A, Morgan G J. Phys Stat Sol, 2005; 242: 1460

[7] Lewalle A, Pepper M, Ford C J B, Paul D J, Redmond G. Phys Rev, 2004; 69B: 075316

[8] Sohneider M P, Carr S T, Gomyi I V, Mirlin A. Phy Rev, 2012; 86B: 155141

[9] Coleridge P T, Sachrajda A S, Zawadzki P. Phy Rev, 2001; 65B: 125328

[10] Wang Q, Li Y X. Mater Rev, 2001; 15: 7

(王强, 李言祥. 材料导报, 2001; 15: 7)

[11] Fan Z J, Geng X W, Kong W J, Jin Y R. Acta Phys Sin, 2009; 58: 7119

(樊振军, 耿学文, 孔文婕, 金贻荣, 物理学报, 2009; 58: 7119)

[12] Asai S. Sci Technol Adv Mater, 2000; 1: 191

[13] Gillon P. Mater Sci Eng, 2000; A287: 146

[14] Chen D D, Zhang H T, Wang X J, Cui J Z. Acta Metall Sin, 2011; 47: 185

(陈丹丹, 张海涛, 王向杰, 崔建忠. 金属学报, 2011; 47: 185)

[15] Dong J, Cui J Z, Yu F X, Ban C Y, Zhao Z H. Metall Mater Trans, 2004; 35A: 2487

[16] Zhang H T, Nagaumi H, Zuo Y B, Cui J Z. Mater Sci Eng, 2007; A448:189

[17] Xu X J, Deng A Y, Wang E G, Zhang L T, Zhang X W, Zhang Y J, He J C.Acta Metall Sin, 2009; 45: 464

(徐秀杰, 邓安元, 王恩刚, 张林涛, 张兴武, 张永杰, 赫冀成. 金属学报, 2009; 45: 464)

[18] Mitsuo S. Liquid Metals. London: Academic Press, 1977: 262

[19] Takamich I, Roderick I L G. The Physic Properties of Liquid Metals. New York: Oxford University Press, 1988: 230

[20] Bruce N A, Morgan G J. Phys Rev, 1995; 51B: 12313

[21] Yan S S. Introduction to Modern Solid State Physics. Beijing: Peking University Press, 2008: 42

(阎守胜. 现代固体物理学导论. 北京: 北京大学出版社, 2008: 42)

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献