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Elastic Properties of FeNi/Cu and FeNi/Nb Metallic Superlattices Investigated by Brillouin Light Scattering

Published online by Cambridge University Press:  15 February 2011

G. Carlotti ,
G. Socino ,
Hua Xia ,
An Hu  and
S. S. Jiang
G. Carlotti
Affiliation:
Dipartimento di Fisica, Unità INFM, Università di Perugia, Via Pascoli, 06100 Perugia, Italy
G. Socino
Affiliation:
Dipartimento di Fisica, Unità INFM, Università di Perugia, Via Pascoli, 06100 Perugia, Italy
Hua Xia
Affiliation:
National Laboratory of Solid State Microstructures, Nanjing University, 210008 Nanjing P.R.China
An Hu
Affiliation:
National Laboratory of Solid State Microstructures, Nanjing University, 210008 Nanjing P.R.China
S. S. Jiang
Affiliation:
National Laboratory of Solid State Microstructures, Nanjing University, 210008 Nanjing P.R.China
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Abstract

The Brillouin light scattering technique has been exploited in order to investigate the elastic properties of periodic superlattices consisting of alternating layers of Fe20Ni80 (permalloy) and either Cu or Nb. These multilayers, with total thicknesses ranging between 0.2 and 0.7 mm and with periods of typically 3-5 nm, present a polycrystalline structure with (110) texture for the Nb layers and (111) texture for both the FeNi and Cu layers. Measurement of the frequency position of the Brillouin peaks corresponding to the Rayleigh and Sezawa acoustic modes allowed the effective elastic constants of these structures to be determined. The values obtained are compared with those calculated from the elastic constants of the bulk materials, taking into account the polycrystalline nature of the superlattices and the crystallographic orientation of the layers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 343: Symposium H – Polycrystalline Thin Films - Structure, Texture, Properties and Applications , 1994 , 567
Copyright
Copyright © Materials Research Society 1994

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References

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