Sensing anisotropic stresses with ferromagnetic nanowires
Copyright policy )Sensing anisotropic stresses with ferromagnetic nanowires
We have measured the temperature variation of the magnetic anisotropy of Ni nanowires (Ni NWs) embedded in freestanding porous anodized aluminum oxide membranes, using DC magnetometry and ferromagnetic resonance. Both techniques show a significant reduction of the uniaxial anisotropy with decreasing temperature. This decrease can be explained by magnetoelastic effects, as Ni NWs are subjected to stress due to the difference in thermal expansion coefficients between the nanocomposite materials. Matching our experimental findings with previously measured thermal strains along the Ni NW axis led us to estimate the perpendicular stress. Thus, we postulate the Ni NWs as nanometric differential stress sensors.
- National Scientific and Technical Research Council Argentina
- Bariloche Atomic Centre Argentina
- Instituto de Física del Litoral Argentina
- National University of the Littoral Argentina
- Polytechnic University of Bari Italy
Composite material, Materials Science, Anodizing, Stress (linguistics), Magnetization, Quantum mechanics, Ferromagnetic resonance, Magnetoelasticity, Nuclear magnetic resonance, Engineering, https://purl.org/becyt/ford/1.3, Materials Chemistry, Aluminium, Optoelectronics, https://purl.org/becyt/ford/1, Magnetic anisotropy, Fabrication and Applications of Porous Alumina Membranes, Civil and Structural Engineering, Nanoporous Membranes, Nanocomposite, Nanowires, Physics, Optics, Linguistics, Reinforcement Corrosion in Concrete Structures, Amorphous alumina, Condensed matter physics, Pollution, Magnetometer, Materials science, FOS: Philosophy, ethics and religion, Ferromagnetic Resonance, Impact of Road Salt on Freshwater Salinization, Nanowire, Philosophy, Magnetic field, Physical Sciences, Environmental Science, Ferromagnetism, FOS: Languages and literature, Anisotropy, Thermal expansion
Composite material, Materials Science, Anodizing, Stress (linguistics), Magnetization, Quantum mechanics, Ferromagnetic resonance, Magnetoelasticity, Nuclear magnetic resonance, Engineering, https://purl.org/becyt/ford/1.3, Materials Chemistry, Aluminium, Optoelectronics, https://purl.org/becyt/ford/1, Magnetic anisotropy, Fabrication and Applications of Porous Alumina Membranes, Civil and Structural Engineering, Nanoporous Membranes, Nanocomposite, Nanowires, Physics, Optics, Linguistics, Reinforcement Corrosion in Concrete Structures, Amorphous alumina, Condensed matter physics, Pollution, Magnetometer, Materials science, FOS: Philosophy, ethics and religion, Ferromagnetic Resonance, Impact of Road Salt on Freshwater Salinization, Nanowire, Philosophy, Magnetic field, Physical Sciences, Environmental Science, Ferromagnetism, FOS: Languages and literature, Anisotropy, Thermal expansion
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