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Magnetoelasticity in dysprosium-scandium superlattices

Magnetoelasticity in dysprosium-scandium superlattices
Magnetoelasticity in dysprosium-scandium superlattices
We have studied the magnetoelastic stress parameter, Bγ,2, associated with the shear deformation within the basal plane of the (0 0 0 1) Dy (20 Å)/Sc (t=20–60 Å) superlattices (SLs). The extrapolated Bγ,2(0 K) values change from 1.45 to 0.9 GPa when t changes from 60 to 20 Å, respectively. All SLs show a thermal behavior of Bγ,2 affected by volume and interfacial contributions. The scandium thickness dependence of the volume contribution shows a surprisingly logarithmic behavior that indicates the existence of dislocations in the Dy blocks.
rare-earth superlattices, magnetostriction
0304-8853
2058-2059
Benito, L.
f4204791-a071-4814-8e84-8efcaa2eacab
Arnaudas, J.I.
6848d11a-1674-46da-8cdb-68bb7feaac7c
de la Fuente, C.
55558213-8894-4871-88ac-a5006f1ff5bf
del Moral, A.
4e94b4d7-b080-49a5-b6de-eb913e80b476
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Wells, M.R.
eb14a225-4803-4e6c-87b6-c1d1e5b8483d
Ward, R.C.C.
b5eaa153-e136-4555-8b07-325a4b5329cb
Benito, L.
f4204791-a071-4814-8e84-8efcaa2eacab
Arnaudas, J.I.
6848d11a-1674-46da-8cdb-68bb7feaac7c
de la Fuente, C.
55558213-8894-4871-88ac-a5006f1ff5bf
del Moral, A.
4e94b4d7-b080-49a5-b6de-eb913e80b476
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Wells, M.R.
eb14a225-4803-4e6c-87b6-c1d1e5b8483d
Ward, R.C.C.
b5eaa153-e136-4555-8b07-325a4b5329cb

Benito, L., Arnaudas, J.I., de la Fuente, C., del Moral, A., de Groot, P.A.J., Wells, M.R. and Ward, R.C.C. (2004) Magnetoelasticity in dysprosium-scandium superlattices. Journal of Magnetism and Magnetic Materials, 272-276 (3), 2058-2059. (doi:10.1016/j.jmmm.2003.12.823).

Record type: Article

Abstract

We have studied the magnetoelastic stress parameter, Bγ,2, associated with the shear deformation within the basal plane of the (0 0 0 1) Dy (20 Å)/Sc (t=20–60 Å) superlattices (SLs). The extrapolated Bγ,2(0 K) values change from 1.45 to 0.9 GPa when t changes from 60 to 20 Å, respectively. All SLs show a thermal behavior of Bγ,2 affected by volume and interfacial contributions. The scandium thickness dependence of the volume contribution shows a surprisingly logarithmic behavior that indicates the existence of dislocations in the Dy blocks.

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More information

Published date: May 2004
Keywords: rare-earth superlattices, magnetostriction

Identifiers

Local EPrints ID: 57081
URI: https://eprints.soton.ac.uk/id/eprint/57081
ISSN: 0304-8853
PURE UUID: faff55f1-224c-4940-8949-93ca5f8c1cbc

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Date deposited: 13 Aug 2008
Last modified: 13 Mar 2019 20:34

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