Applied Physics A

, Volume 86, Issue 3, pp 325–328

Engineering coercivity in YFe2 dominated DyFe2/YFe2 superlattice by patterning

  • K. Wang
  • K.N. Martin
  • C.G. Morrison
  • R.C.C. Ward
  • G.J. Bowden
  • P.A.J. de Groot
Rapid communication

DOI: 10.1007/s00339-006-3791-x

Cite this article as:
Wang, K., Martin, K., Morrison, C. et al. Appl. Phys. A (2007) 86: 325. doi:10.1007/s00339-006-3791-x

Abstract

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.

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • K. Wang
    • 1
  • K.N. Martin
    • 1
  • C.G. Morrison
    • 1
  • R.C.C. Ward
    • 2
  • G.J. Bowden
    • 1
  • P.A.J. de Groot
    • 1
  1. 1.School of Physics and AstronomyUniversity of SouthamptonSouthamptonUK
  2. 2.Clarendon LaboratoryOxford UniversityOxfordUK