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Invar effect in fcc-FeCu solid solutions

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Gorria, Pedro and Martínez Blanco, David and Blanco, Jesús A. and Hernando Grande, Antonio and Garitaonandia, José S. and Fernández Barquín, Luis and Campo, Javier and Smith, Ronald I. (2004) Invar effect in fcc-FeCu solid solutions. Physical review B, 69 (21). ISSN 1098-0121

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Official URL: http://dx.doi.org/10.1103/PhysRevB.69.214421


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Abstract

Both Cu and Fe metals, with face-centered cubic (fcc) crystal structures, are nonmagnetic. However, the substitution of Cu atoms by Fe in the fcc-Cu lattice leads to the formation of a random solid solution and the appearance of ferromagnetic order, with a value of the magnetic moment per Fe atom in a fcc environment even above 2µ_ß. This striking behavior is closely related to magnetovolume effects (Invar), which we have detected by means of lattice thermal expansion and magnetization measurements in FeCu alloys.


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©2004 The American Physical Society
The work was partially supported by the Research Grants No. MAT2002-04178-C04 and No. MAT2000-1047 and by EU under IHP programme. We also thank the ILL and the CRG-D1B, together with ISIS for the allocation of neutron beam time, and the SCT at the University of Oviedo for the high resolution XRD facility. D.M.-B. thanks Spanish MCyT for additional support.

Uncontrolled Keywords:Magnetic-properties; Immiscible elements; Cu alloys; Iron; Pressure; Behavior; Origin
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:44190
Deposited On:28 Nov 2017 18:46
Last Modified:28 Nov 2017 18:46

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