Journal
APPLIED PHYSICS LETTERS
Volume 89, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2405885
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The authors have investigated the effect of stress on the room-temperature magnetism of a 10 nm thick Heusler-alloy film NiMnSb grown epitaxially on InP. Tensile stress, which the authors applied externally along the easy axis using a piezostack, is shown to reduce the coercivity and the anisotropy coefficient. Using broadband ferromagnetic resonance measurements, the authors find that a relative variation in the lattice constant as small as 0.08% changes the in-plane uniaxial anisotropy by 20%. This explains the significant variation of anisotropy with film thickness, which was recently reported for NiMnSb. (c) 2006 American Institute of Physics.
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