Microwave assisted magnetic recording technologies and related physics

S Okamoto, N Kikuchi, M Furuta… - Journal of Physics D …, 2015 - iopscience.iop.org
Microwave assisted magnetic recording (MAMR) has been proposed as one of the
prospective recording technologies for forthcoming tera-bit-class magnetic recording. In this …

Microwave assisted magnetic recording: Physics and application to hard disk drives

M Takagishi, N Narita, Y Nakagawa… - Journal of Magnetism …, 2022 - Elsevier
Microwave assisted magnetic recording (MAMR) is one of the key candidate technologies
for ten terabits class magnetic recording. In this article, we review MAMR technology and its …

An induction method to calculate the complex permeability of soft magnetic films without a reference sample

J Wei, J Wang, Q Liu, X Li, D Cao, X Sun - Review of Scientific …, 2014 - pubs.aip.org
A new analytical method has been proposed by utilizing an electromagnetic induction
principle with a short-circuited microstrip line jig and the complex permeability spectra can …

Designing and tuning magnetic resonance with exchange interaction.

Y Chen, X Fan, Y Zhou, Y Xie, J Wu… - … (Deerfield Beach, Fla …, 2015 - europepmc.org
Exchange interaction at the interface between magnetic layers exhibits significant
contribution to the magnetic resonance frequency. The in situ tuning of the resonance …

Pushing down the lateral dimension of single and coupled magnetic dots to the nanometric scale: Characteristics and evolution of the spin-wave eigenmodes

G Carlotti - Applied Physics Reviews, 2019 - pubs.aip.org
Planar magnetic nanoelements, either single-or multilayered, are exploited in a variety of
current or forthcoming spintronic and/or ICT devices, such as read heads, magnetic memory …

Effect of substrate roughness on the magnetic properties of CoFeB films

H Xie, L Pan, X Cheng, Z Zhu, H Feng, J Wang… - Journal of Magnetism …, 2018 - Elsevier
In this paper, a serious of CoFeB films of 30 nm prepared by a DC magnetron sputtering on
Si substrates with different roughness etched by NaOH solution are investigated. It is found …

Theory and experiment of microwave-assisted magnetization switching in perpendicular magnetic nanodots

S Okamoto, M Furuta, N Kikuchi… - IEEE transactions on …, 2014 - ieeexplore.ieee.org
In this paper, we review the theory and experiment on microwave-assisted magnetization
switching in perpendicular magnetic nanodots. Within the framework of the single-macrospin …

Fast magnetization reversal of a magnetic nanoparticle induced by cosine chirp microwave field pulse

MT Islam, MAS Akanda, MAJ Pikul… - Journal of Physics …, 2021 - iopscience.iop.org
We investigate the magnetization reversal of single-domain magnetic nanoparticle driven by
the circularly polarized cosine chirp microwave pulse (CCMP). The numerical findings …

Magnetization Dynamics and Damping for L10-FePd Thin Films with Perpendicular Magnetic Anisotropy

S Iihama, M Khan, H Naganuma, M Oogane… - Journal of the …, 2015 - jstage.jst.go.jp
Magnetization dynamics and damping for FePd films were investigated using the all-optical
time-resolved magneto-optical Kerr effect. We deposited 16-nm-thick FePd thin films on a …

Evaluation of the effective potential barrier height in nonlinear magnetization dynamics excited by ac magnetic field

G Okano, Y Nozaki - Physical Review B, 2018 - APS
An alternating current (ac) magnetic field or spin current can reduce the switching field of a
ferromagnet through resonance excitation of a large-angle precession of magnetization. The …