Ferromagnetic Resonance Studies in Magnetic Nanosystems
نویسندگان
چکیده
Ferromagnetic resonance is a powerful method for the study of all classes magnetic materials. The experimental technique has been used many decades and based on excitation spin system via microwave (or rf) field. While earlier methods were use spectrometer, more recent developments have seen widespread vector network analyzer (VNA), which provides versatile measurement at almost comparable sensitivity. former fixed frequency excitation, VNA enables frequency-dependent measurements, allowing in-depth analysis. We applied this to nanostructured thin films or nanodots coupled layer systems comprised exchange-coupled ferromagnetic layers with in-plane perpendicular anisotropies. In first system, we investigated magnetization dynamics in Co/Ag bilayers nanodots. second studied Permalloy (Ni80Fe20, hereafter Py) an intervening Al varying thickness NdCo film anisotropy.
منابع مشابه
Ferromagnetic resonance in ϵ-Co magnetic composites.
We investigate the electromagnetic properties of assemblies of nanoscale ϵ-cobalt crystals with size range between 5 to 35 nm, embedded in a polystyrene matrix, at microwave (1-12 GHz) frequencies. We investigate the samples by transmission electron microscopy imaging, demonstrating that the particles aggregate and form chains and clusters. By using a broadband coaxial-line method, we extract t...
متن کاملFerromagnetic resonance studies in Co/SiO2 multilayers
The uniaxial in-plane and out-of-plane anisotropies of [Co/SiO2] 10 multilayers have been studied by ferromagnetic resonance, magnetometry and transmission electron microscopy. The surface and volume anisotropy constants are in the range of values typical for multilayers with Co and transition metals of the iron group. The influence of the intermixed Co–SiO2 region is discussed. # 2007 Elsevier...
متن کاملsafety considerations in cardiovascular magnetic resonance imaging studies
the aim of this review is focusing on the most important safety issues in cardiovascular mri (magnetic resonance imaging) which are categorized as: 1-safety items in patients who referred for stress cardiac mr studies. 2-safety consideration that we must know when a patient with cardiovascular devices referred for any (cardiovascular or non-cardiovascular) mri with focus on new protocols accord...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Magnetochemistry
سال: 2021
ISSN: ['2312-7481']
DOI: https://doi.org/10.3390/magnetochemistry7090126