The University of Southampton
University of Southampton Institutional Repository

Engineering coercivity in epitaxially grown (110) films of DyFe2–YFe2 superlattices

Engineering coercivity in epitaxially grown (110) films of DyFe2–YFe2 superlattices
Engineering coercivity in epitaxially grown (110) films of DyFe2–YFe2 superlattices
Molecular beam epitaxial methods have been used to grow single crystal Laves phase DyFe2–YFe2 superlattice samples with a (110) growth direction. It is shown that it is possible, in principle, to engineer a desired coercivity between the limits KDyFe2<=K<=[infinity]. This can be achieved by adjusting the relative thickness of the individual DyFe2 and YFe2 layers, in multilayer films This novel feature is illustrated, using the superlattice films [x Å DyFe2/(100-x) Å YFe2]×40, with x = 80, 60, 50, and 45. It is found that the measured coercivity is in semiquantitative agreement with a simple theoretical expression, for the nucleation fields in both bilayer and multilayer compounds. However, in practice, exchange spring penetration into the DyFe2 layers can set a limit to the maximum coercivity that can be achieved.
0003-6951
573-575
Sawicki, M.
c96b5e84-c885-4bd3-89e8-c69e48a40d8d
Bowden, G.J.
f73a1c01-4d38-4170-bf30-9ebfa4283807
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Rainford, B.D.
a57f1153-bbba-49a3-bffc-0d96087156a0
Beaujour, J.M.L.
76365491-7a41-45d2-8cf4-f819474215a8
Ward, R.C.C.
b5eaa153-e136-4555-8b07-325a4b5329cb
Wells, M.R.
eb14a225-4803-4e6c-87b6-c1d1e5b8483d
Sawicki, M.
c96b5e84-c885-4bd3-89e8-c69e48a40d8d
Bowden, G.J.
f73a1c01-4d38-4170-bf30-9ebfa4283807
de Groot, P.A.J.
98c21141-cf90-4e5c-8f2b-d2aae8efb84d
Rainford, B.D.
a57f1153-bbba-49a3-bffc-0d96087156a0
Beaujour, J.M.L.
76365491-7a41-45d2-8cf4-f819474215a8
Ward, R.C.C.
b5eaa153-e136-4555-8b07-325a4b5329cb
Wells, M.R.
eb14a225-4803-4e6c-87b6-c1d1e5b8483d

Sawicki, M., Bowden, G.J., de Groot, P.A.J., Rainford, B.D., Beaujour, J.M.L., Ward, R.C.C. and Wells, M.R. (2000) Engineering coercivity in epitaxially grown (110) films of DyFe2–YFe2 superlattices. Applied Physics Letters, 77 (4), 573-575. (doi:10.1063/1.127048).

Record type: Article

Abstract

Molecular beam epitaxial methods have been used to grow single crystal Laves phase DyFe2–YFe2 superlattice samples with a (110) growth direction. It is shown that it is possible, in principle, to engineer a desired coercivity between the limits KDyFe2<=K<=[infinity]. This can be achieved by adjusting the relative thickness of the individual DyFe2 and YFe2 layers, in multilayer films This novel feature is illustrated, using the superlattice films [x Å DyFe2/(100-x) Å YFe2]×40, with x = 80, 60, 50, and 45. It is found that the measured coercivity is in semiquantitative agreement with a simple theoretical expression, for the nucleation fields in both bilayer and multilayer compounds. However, in practice, exchange spring penetration into the DyFe2 layers can set a limit to the maximum coercivity that can be achieved.

This record has no associated files available for download.

More information

Published date: 2000

Identifiers

Local EPrints ID: 14739
URI: http://eprints.soton.ac.uk/id/eprint/14739
ISSN: 0003-6951
PURE UUID: fc8d8b5b-dd77-4716-9f7b-30d761ae180a

Catalogue record

Date deposited: 03 Mar 2005
Last modified: 08 Jan 2022 12:49

Export record

Altmetrics

Contributors

Author: M. Sawicki
Author: G.J. Bowden
Author: P.A.J. de Groot
Author: B.D. Rainford
Author: J.M.L. Beaujour
Author: R.C.C. Ward
Author: M.R. Wells

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×