Stress dependence of ferromagnetic resonance and magnetic anisotropy in a thin NiMnSb film on InP(001)

被引:40
作者
Botters, Bernhard
Giesen, Fabian
Podbielski, Jan
Bach, Peter
Schmidt, Georg
Molenkamp, Laurens W.
Grundler, Dirk
机构
[1] Tech Univ Munich, Dept Phys, Fak Phys, D-85748 Garching, Germany
[2] Univ Hamburg, Inst Angew Phys, D-20355 Hamburg, Germany
[3] Univ Hamburg, Zentrum Mikrostrukturforsch, D-20355 Hamburg, Germany
[4] Univ Wurzburg, Inst Phys, D-97074 Wurzburg, Germany
关键词
FREQUENCY;
D O I
10.1063/1.2405885
中图分类号
O59 [应用物理学];
学科分类号
摘要
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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页数:3
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