As an application the propagation of a plane electromagnetic (micro-) wave in a magnetized ferromagnetic medium is discussed. A quantum theory of the resonance phenomenon is given on the basis of a generalized Bloch spin-wave theory. An ambiguity in the use of the term gyro magnetic ratio is...
The theory of ferromagnetic resonance at high signal powers B loembergen and W ang, as well as D amon, have observed two anomalous effects in the microwave absorption of ferromagnets at high signal powers: a saturat... H Suhl - 《Journal of Physics & Chemistry of Solids》 被引量: 773...
It is shown that different dependences of the spin and orbital magnetic moments on the magnetic field perpendicular to spontaneous magnetization lead to crossover of the spin and orbital branches and to a gap in the ferromagnetic resonance spectrum. The contribution of orbital excitations to the ...
The nanowires have 25 μm length and 60nm diameter and are oriented perpendicular to the sample plane. The study focuses on the ferromagnetic resonance (FMR) measurements in Q band (34 GHz), study which allow the identification of the anisotropy effects in Co nanowires....
and 665 cm−1. According to the group theory of the Raman spectrum for mixed spinel ferrite, as the degree of inversion grows, the expected five internal modes' symmetry is disturbed, and the number of normal modes starts to grow. Accordingly, the shoulders and broadening seen in the signa...
Landau-Lifshitz theory of the longitudinal spin Seebeck effect length scales in the ferromagnet, which govern qualitative changes in the dependence of the thermally-induced spin current on the magnetic film thickness.doi... S Hoffman,K Sato,Y Tserkovnyak - 《Physical Review B Condensed Matter》 ...
Reservoir computing is a concept involving mapping signals onto a high-dimensional phase space of a dynamical system called “reservoir” for subsequent recognition by an artificial neural network. We implement this concept in a nanodevice consisting of
First principles calculations based on density-functional theory are used to investigate the geometrical and electronic structure of a NiFe(001) invar surface. We use different ordered as well as alloy fcc-like structures to simulate the system. Ab initio atomic force minimizations show that the (...
Producing hydrogen by water electrolysis suffers from the kinetic barriers in the oxygen evolution reaction (OER) that limits the overall efficiency. With spin-dependent kinetics in OER, to manipulate the spin ordering of ferromagnetic OER catalysts (e.g
NK Khaira,T Singh,RR Mansour - 《IEEE Transactions on Microwave Theory & Techniques》 被引量: 0发表: 2019年 Ferromagnetic resonance in millimeter waves: Micro- and nanoferrites Complex magnetic permeability and dielectric permittivity of micro- and nano-sized powdered barium ferrite (BaFe) have bee...