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Engineering coercivity in YFe2 dominated DyFe2/YFe2 superlattice by patterning

Record type: Article

Single crystal 400 nm thick Laves phase [20 Å?DyFe2/80 Å?YFe2]40 superlattice have been grown by MBE with a (110) growth direction. VSM measurements performed at room temperature with an applied field range of ±1.2×105 Oe, directed along the [001] direction, reveal a unique single-phase-liked ferrimagnetic behavior. A dominant exchange spring behavior is revealed by MOKE measurement along the [–110] direction. Furthermore, for striped arrays patterned along the [001] direction with height-to-width ratio of 0.05, a shape anisotropy of the order of 104 erg/cm3 is induced, resulting into a pronounced change of coercivity due to the comparable magnitude with intrinsic anisotropies. The results demonstrate the feasibility of engineering both single-phase-liked and exchange-spring magnet behavior in Laves phase epitaxial hard/soft superlattices by patterning.

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Citation

Wang, K., Martin, K.N., Morrison, C.G., Ward, R.C.C., Bowden, G.J. and de Groot, P.A.J. (2007) Engineering coercivity in YFe2 dominated DyFe2/YFe2 superlattice by patterning Applied Physics A: Materials Science & Processing, 86, (3), pp. 325-328. (doi:10.1007/s00339-006-3791-x).

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Published date: March 2007

Identifiers

Local EPrints ID: 143967
URI: http://eprints.soton.ac.uk/id/eprint/143967
ISSN: 0947-8396
PURE UUID: 2300c3fc-e34f-4946-8487-bc0c37e083ef

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Date deposited: 03 Jun 2010 13:40
Last modified: 18 Jul 2017 23:08

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Contributors

Author: K. Wang
Author: K.N. Martin
Author: C.G. Morrison
Author: R.C.C. Ward
Author: G.J. Bowden
Author: P.A.J. de Groot

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