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a-TM-Zr合金的磁性质与invar效应

黄志高 王建平

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a-TM-Zr合金的磁性质与invar效应

黄志高, 王建平

MAGNETIC PROPERTIES AND INVAR EFFECT OF a-TM-Zr ALLOYS

HUANG ZHI-GAO, WAN JIAN-PIN
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  • 本文报道液氮温度下a-Fe90-xCoxZr10(x=0,4,10,20)和Fe90-yCryZr10(y=4,7,13,16)系列合金的穆斯堡尔谱,结果表明,上述合金存在两种不同的磁状态,它们的超精细参数随3d过渡金属的平均外层电子数α的变化曲线在α=8附近存在异常现象,这体现了低Co,Cr的a-Fe-(Co,Cr)-Zr合金的invar效应,约化超精细场随约化温度的变化结
    In this paper, the M?ssbauer spectra of a-Fe90-xCoxZr10(x = 0,4,10,20) and Fe90-yCryZr10(y= 4,7,13,16) alloys were studied at 77K. The results indicate that two different magnetic states exist in a-Fe-(Co, Cr)-Zr alloys, the dependence of hyperfine parameters on the average outer electron concentration a of the 3d TM atom show anomalies in the vicinity of a = 8, which implies the invar effect of a-Fe90Zr10 and a-Fe-(Co, Cr)-Zr with low Ca(Cr). The reduced temperature dependence of the reduced hyperfine field reveal the existence of amorphous ferromagnetism in a-Fe90-xCoxZr10(x = 10, 20) and the spin-grass-like behavior in a-Fe90-xCoxZr10(x = 0,4). A new magnetic structure model are suggested and discussed.
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出版历程
  • 收稿日期:  1989-06-02
  • 刊出日期:  2005-03-20

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