Neutron scattering studies of amorphous invar alloys

J. A. Fernandez-Baca

doi:10.1016/0921-4526(89)90136-1

Neutron scattering studies of amorphous invar alloys

J. A. Fernandez-Baca

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Abstract

This paper reviews recent inelastic neutron scattering experiments performed to study the spin dynamics of two amorphous invar systems: Fe_100-xB_x and Fe_90-xNi_xZr₁₀. As in crystalline invar Fe₆₅Ni₃₅ and Fe₃Pt, the excitation of conventional long-wavelength spin waves in these amorphous systems cannot account for the relatively rapid change of their magnetization with temperature. These results are discussed in terms of additional low-lying excitations which apparently have a density of states similar to the spin waves.

Original language	English
Pages (from-to)	211-218
Number of pages	8
Journal	Physica B: Physics of Condensed Matter
Volume	161
Issue number	1-3
DOIs	https://doi.org/10.1016/0921-4526(89)90136-1
State	Published - Jan 1990

Funding

It is a pleasure to acknowledge my collaborators J.W. Lynn, J.J. Rhyne and G.E. Fish. The work at ORNL was supported by US DOE under contract DE-AC05840R21400, with Martin Marietta Energy Systems, Inc.

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title = "Neutron scattering studies of amorphous invar alloys",

abstract = "This paper reviews recent inelastic neutron scattering experiments performed to study the spin dynamics of two amorphous invar systems: Fe100-xBx and Fe90-xNixZr10. As in crystalline invar Fe65Ni35 and Fe3Pt, the excitation of conventional long-wavelength spin waves in these amorphous systems cannot account for the relatively rapid change of their magnetization with temperature. These results are discussed in terms of additional low-lying excitations which apparently have a density of states similar to the spin waves.",

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AB - This paper reviews recent inelastic neutron scattering experiments performed to study the spin dynamics of two amorphous invar systems: Fe100-xBx and Fe90-xNixZr10. As in crystalline invar Fe65Ni35 and Fe3Pt, the excitation of conventional long-wavelength spin waves in these amorphous systems cannot account for the relatively rapid change of their magnetization with temperature. These results are discussed in terms of additional low-lying excitations which apparently have a density of states similar to the spin waves.

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Neutron scattering studies of amorphous invar alloys

Abstract

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