Magnetism of Invar alloys under pressure examined by inelastic x-ray scattering

被引：64
|
作者：
Rueff, JP [1 ]
Shukla, A [1 ]
Kaprolat, A [1 ]
Krisch, M [1 ]
Lorenzen, M [1 ]
Sette, F [1 ]
Verbeni, R [1 ]
机构：
[1] European Synchrotron Radiat Facil, F-38043 Grenoble, France
来源：
PHYSICAL REVIEW B | 2001年 / 63卷 / 13期
关键词：
D O I：
10.1103/PhysRevB.63.132409
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetic properties of the Invar alloy Fe64Ni36 have been investigated by x-ray emission spectroscopy as a function of pressure up to 20 GPa. With increasing pressure, the amplitude of the Fe local moment, deduced from the Fe K beta line satellite intensity, is reduced at two characteristic step values. This pressure dependence is interpreted in terms of transitions from a high-spin state to a low-spin state at approximate to5 GPa followed by a transition to a nonmagnetic state above 15 GPa. This behavior provides a microscopic picture of the Fe magnetism in agreement with the 2 gamma -state model.
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页数：4
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