非晶铁基合金中两类不同的压磁效应

苏昉; 苏骏; 许伟

doi:10.11858/gywlxb.1993.01.002

非晶铁基合金中两类不同的压磁效应

doi: 10.11858/gywlxb.1993.01.002

苏昉^1,,
苏骏²,
许伟¹

1.
中国科学技术大学基础物理中心，结构分析开放实验室，安徽合肥 230026；
2.
中国科学技术大学物理系，安徽合肥 230026

详细信息

通讯作者:
苏昉

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出版历程
- 收稿日期: 1992-10-04
- 修回日期: 1992-10-04
- 发布日期: 1993-03-05

Two Kinds of Different Effect of Pressure on Magnetism in Amorphous Alloys with Fe-Base

SU Fang^1
,,
SU Jun²,
XU Wei¹

1.
Center of Fundamental Physics, Structure Research Laboratory, University of Science and Technology of China, Hefei 230026, China;
2.
Department of Physics, University of Science and Technology of China, Hefei 230026, China

More Information

Corresponding author: SU Fang

摘要

摘要: 本文详细介绍了在0.000 1~2.3 GPa流体静压力下测量三种非晶合金饱和磁感应强度Bs和最大磁导率max的实验方法。实验结果表明：三种非晶合金受压后Bs和max表现各异，可归为两大类。（1）第一类压磁效应：总趋势是Bs和max都随压力增加而下降，但在几个压力区Bs反常增高。如Fe75Ni5Si5B15非晶合金Bs随压力增加均匀下降，(Fe0.85Co0.15)Cu0.4Si4.4B13.2非晶合金的Bs随压力增加降升再降。（2）第二类压磁效应，如Fe78.75Cu1.25Si5B15非晶合金的Bs和max随压力增加都有未见报导过的微弱升高。分别结合局域电子模型的交换作用理论和巡游电子模型的刚带理论进行了讨论。
- 非晶态合金 /
- 流体静压力 /
- 压磁压力
Abstract: The paper introduces in detail the experimental method to measure the saturation intensity of magnetization Bs and the maximum magnetic permeability max of amorphous alloy under hydrostatic pressures from 0.000 1 to 2.3 GPa. The results show that Bs and max of three amorphous alloys are different from each other, can be classified into two kinds. (1) The first kind of pressure effect on magnetism: general trendBs decreases when pressure increases, but in some pressure ranges Bs presents an anomalous rise, such as even decrease of Bs in amorphous alloy Fe75Ni5Si5B15, drop-rise-drop again of Bs in amorphous alloy (Fe0.85Co0.15)Cu0.4Si4.4B13.2. (2) The second kind of pressure effect on magnetism: Both Bs and max of amorphous alloy Fe78.75Cu1.25Si5B15 rise weakly when pressure increases. This is a new result. Respectively we discussed (1) and (2) by exchange-role theory of located electron-mode and rigid band theory of itinerant electron mode.
- amorphous alloy /
- hydrostatic pressure /
- pressure effect on magnetism