FMR Measurements of Magnetic Nanostructures
نویسندگان
چکیده
Ferromagnetic nanowires showed solitary and tunable magnetization properties due to their inherent shape anisotropy. The fabrication of such nanowires in polycarbonate track-etched and anodic alumina membranes have been widely studied during the last 15 years [1-2]. Their potential applications might be explored in spintronic devices and more specifically in magnetic random access memory (MRAM) and magnetic logic devices [3-5]. Furthermore, microwave devices, such as circulators or filters for wireless communication and automotive systems can be fabricated on ferromagnetic nanowires embedded in AAO substrates [6-9].
منابع مشابه
Ferromagnetic resonance spectroscopy for assessment of magnetic anisotropy and magnetostatic interactions: A case study of mutant magnetotactic bacteria
[1] Ferromagnetic resonance spectroscopy (FMR) can be used to measure the effective magnetic field within a sample, including the contributions of both magnetic anisotropy and magnetostatic interactions. One particular use is in the detection of magnetite produced by magnetotactic bacteria. These bacteria produce single-domain particles with narrow size and shape distributions that are often el...
متن کاملStructural, magnetic and dielectric properties of pure and Dy-doped Co3O4 nanostructures for the electrochemical evolution of oxygen in alkaline media
In this study, spinel-type cobalt oxide (Co3O4) and Co3-xDyxO4 (x = 0.04 and 0.05 molar ratio) nanoparticles were synthesized via combustion method at 700 °C. Crystallite nature, phase purity and thermal analysis of the prepared compounds were investigated by PXRD, FT-IR and TGA techniques. Structural analyses were performed by the FullProf program employing profile matching with constant scale...
متن کاملInterfacial anisotropy in magnetic superlattices.
We have observed large discrepancies between the dc magnetization and ferromagnetic resonance (FMR) magnetic anisotropy in Mo-Ni superlattices. We show that higher-order anisotropy is present in both measurements and develop an analysis by which the first-order and second-order energies can be treated independently. The low-temperature results show a systematic divergence of the first-order FMR...
متن کاملThe Fmr Linewidth of Iron-nickel Alloys in High Magnetic Fields
It is well known from measurements at microwave frequencies that the linewidth of metallic ferromagnets contains a term which is linear in frequency, called the Landau-Lifshitz damping term. In order to check the validity of this linear relationship up to the far infraredj we measured ferromagnetic resonances (FMR) on plates and films of Fe-Ni alloys, using far infrared lasers and pulsed magnet...
متن کاملFMR and Static Magnetic Properties of Gallium Substituted Magnetoplumbite
Magnetization and uniaxial anisotropy were studied on single crystals of PbFe,, ,GqO,,, where x = 0 8 from 2 to 360 K. The results suggest that for x > 3 the spin arrangement becomes non-collinear. The magnetic moment and anisotropy for x C 3 are roughly consistent with the random distribution of Ga3+ ions in all sites except for 2b. For x = 5.94 and 8.02 the relatively large anisotropy of the ...
متن کامل