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报道了Cr80-xFe20Mnx(x=10,15,20)合金在10~300K的电阻率和热导率.结果表明样品的电输运性质和热输运性质均与样品的磁状态有关.在SDW反铁磁转变附近,电阻率出现极小.对Neel温度以下电阻率~温度曲线拟合结果表明:取温度相关的能隙函数2Δ∝(TN-T)可以很好地描述SDW反铁磁能隙随温度降低而打开的过程.合金在反铁磁转变温度以下表现出与无序样品或者玻璃态样品类似的热导率温度关系,这可能是源于合金中磁性团簇的散射.

参考文献

[1] E Fawcett .[J].Reviews of Modern Physics,1988,60:209.
[2] E Fawcett;H L Albert;V Yu Galkin;D R Noakes,J V Yakhmi .[J].Reviews of Modern Physics,1994,66:25.
[3] Y Tsuchiya;T Bitoh;S Murayama;S Ohikazawa,Y Hamaguchi .[J].Journal of the Physical Society of Japan,1996,65:3289.
[4] Ch. Somsen;M. Acet;G. Nepecks .The effect of magnetic ordering on the giant magnetoresistance of Cr-Fe-V and Cr-Fe-Mn[J].Journal of Magnetism and Magnetic Materials,2000(3):191-206.
[5] W M Xu .[J].Chinese Science Bulletin,1997,42:282.
[6] W M Xu;P Zheng;Z J Chen;B G Shen .[J].Journal of Magnetism and Magnetic Materials,1997,172:183.
[7] 吴柏枚,李毕友,杨东升,李波,郑卫华,盛松.低温热导率测试系统的建立和自动化[J].低温物理学报,2003(z1):248-252.
[8] B Li;B M Wu;D S Yang;W H Zheng,L Z Cao.[A].
[9] B.M. Wu;D.S. Yang .The transport properties and internal friction related to the antiferromagnetic transition in Cr75(FexMn1-x)25 alloys[J].Journal of Magnetism and Magnetic Materials,1999(2/3):426-430.
[10] 黄昆;韩汝琦.固体物理学[M].北京:高等教育出版社,1988:343,344.
[11] 阎守胜.固体物理基础[M].北京:北京大学出版社,2000:207.
[12] R Berman.Thermal Conduction in Solids[M].Oxford:Clarendon Press:153.
[13] Y Hamaguchi;E O Wollan;W C Koehler .[J].Physical Review,1965,138:A737.
[14] Y Kakehashi .[J].Physical Review,1987,B35:4973.
[15] S K Burke;B D Rainford .[J].Journal of Physics F:Metal Physics,1983,13:441.
[16] S K Burke;R Cywinsk;J R Davis;B.D.Rainford .[J].Journal of Physics F:Metal Physics,1983,13:451.
[17] S K Burke;B D Rainford .[J].Journal of Physics F:Metal Physics,1983,13:471.
[18] H M Rosenberg.Low Temperature Solid State Physics[M].Oxford:Oxford University Press,1963:67.
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