2014
DOI: 10.1063/1.4893157
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Bending strain-tunable magnetic anisotropy in Co2FeAl Heusler thin film on Kapton®

Abstract: Bending effect on the magnetic anisotropy in 20 nm Co2FeAl Heusler thin film grown on Kapton® has been studied by ferromagnetic resonance and glued on curved sample carrier with various radii. The results reported in this letter show that the magnetic anisotropy is drastically changed in this system by bending the thin films. This effect is attributed to the interfacial strain transmission from the substrate to the film and to the magnetoelastic behavior of the Co2FeAl film. Moreover two approaches to determin… Show more

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Cited by 46 publications
(40 citation statements)
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“…Figure a shows the bending curvature (1/ r ) dependence of resistance and output voltage. The values of R and U RMS were stable for AMR sensor wrapped on surfaces with curvature radius r > 10 mm, corresponding to a strain ε = − t /2 r = 0.5%, where t is the thickness of the flexible PET foil. These results demonstrate that the mechanical stress did not induce any cracks or electron trap problem in the Py strips at moderate bending condition.…”
supporting
confidence: 52%
“…Figure a shows the bending curvature (1/ r ) dependence of resistance and output voltage. The values of R and U RMS were stable for AMR sensor wrapped on surfaces with curvature radius r > 10 mm, corresponding to a strain ε = − t /2 r = 0.5%, where t is the thickness of the flexible PET foil. These results demonstrate that the mechanical stress did not induce any cracks or electron trap problem in the Py strips at moderate bending condition.…”
supporting
confidence: 52%
“…The main issues are to understand how the applied strains to the flexible magnetic systems impact their magnetic properties 14 16 . Obviously, when a thin film is deposited on a flexible substrate, it is usually submitted to high mechanical stresses due to the stretching or the curvature of the whole system.…”
Section: Introductionmentioning
confidence: 99%
“…In contrast, thin films, multilayers and flexible substrates overcome these issues and appear as key elements, having striking potential of application in distinct smart devices. For instance, they have been investigated to be applied in electronic skin to mimic the nature with respect to functionality and appearance [7][8][9][10], as well as have been widely explored as ground for spintronics devices mainly due their magnetic and mechanical properties [1,2,5,11,12], in a sense that magnetic properties can enable/disable the film applicability in a specific magnetic devices. This explains the recent interest in controlling and handling of properties as magnetic anisotropy, dynamic magnetic response, magnetostrictive properties and stress in ferromagnetic flexible nanostructures.…”
Section: Introductionmentioning
confidence: 99%