Results 141 to 150 of about 623,579 (384)

Stochastic resonance of a nanomagnet excited by spin transfer torque

, 2009
Spin transfer torque from spin-polarized electrical current can excite large-amplitude magnetization dynamics in metallic ferromagnets of nanoscale dimensions.
Boone, Carl T., Cheng, Xiao, Krivorotov, I. N., Zhu, Jian   +3 more
core   +1 more source

Emergent Magnetic Structures at the 2D Limit of the Altermagnet MnTe

Advanced Functional Materials, EarlyView.
Renewed interest in MnTe has emerged due to its intriguing altermagnetism, a newly identified form of magnetism distinct from conventional ferro‐, antiferro‐, or paramagnetism. By combining magnetic X‐ray absorption spectroscopy, scanning tunnelling microscopy, and first‐principles theory, this study reveals that thinning MnTe to the 2D limit ...
Marc G. Cuxart, Roberto Robles, Beatriz Muñiz Cano, Pierluigi Gargiani, Clara Rebanal, Iolanda Di Bernardo, Alireza Amiri, Fabián Calleja, Manuela Garnica, Miguel A. Valbuena, Amadeo L. Vázquez de Parga   +10 more
wiley   +1 more source

A Theoretical Study of the Effects of Co-Doping Ions at K and Nb Sites on the Properties of KNbO₃ Nanoparticles

Nanomaterials
Using a microscopic model and Green’s function theory, we have investigated the co-doping effect on ferroelectric KNbO3 nanoparticles. Let us emphasize that while the doping with transition metal ions at the Nb site leads an increase in the ...
Angel T. Apostolov, Iliana N. Apostolova, Julia M. Wesselinowa   +2 more
doaj   +1 more source

Simulations of Gamma-Ray Emission from Magnetized Microquasar Jets [PDF]

, 2018
Odysseas Kosmas, Theodoros Smponias
openalex   +1 more source

Numerical study of magnetization processes in rare-earth tetraborides

, 2010
We present a simple model for a description of magnetization processes in rare-earth tetraborides. The model is based on the coexistence of two subsystems, and namely, the spin subsystem described by the Ising model and the electronic subsystem described
Farkašovský, Pavol, Mataš, Slavomir, Čenčariková, Hana   +2 more
core   +1 more source

Unprecedented Spin‐Lifetime of Itinerant Electrons in Natural Graphite Crystals

Advanced Functional Materials, EarlyView.
Graphite exhibits extraordinary spintronic potential, with electron spin lifetimes reaching 1,000 ns at room temperature ‐ over 100 times longer than graphene‐based devices. Magnetic resonance spectroscopy reveals strong anisotropy: out‐of‐plane spins live 50 times longer than their in‐plane counterparts.
Bence G. Márkus, Dávid Beke, Lili Vajtai, András Jánossy, László Forró, Ferenc Simon   +5 more
wiley   +1 more source

The inverse thermal spin-orbit torque and the relation of the Dzyaloshinskii-Moriya interaction to ground-state energy currents

, 2016
Using the Kubo linear-response formalism we derive expressions to calculate the heat current generated by magnetization dynamics in magnets with broken inversion symmetry and spin-orbit interaction (SOI).
Blügel, Stefan, Freimuth, Frank, Mokrousov, Yuriy   +2 more
core   +1 more source

Magnetic and Structural Response Tuned by Coexisting Mn Concentration‐Dependent Phases in MnBi2Te4 Thin Film Grown on GaAs(001) by Molecular Beam Epitaxy

Advanced Functional Materials, EarlyView.
The study explores structural and magnetic properties of one of the most recent topological quantum materials (MnBi2Te4). The Mn‐poor structure leads to stacking faults (quintuple layer ‐ QL of Bi2Te3 formation instead of a septuple layer ‐ SL of MnBi2Te4), resulting in a coexistence between weak antiferromagnetism and ferromagnetism.
Wesley F. Inoch, Sergio L. A. Mello, Gilberto Rodrigues‐Junior, Sukarno O. Ferreira, Marcelo M. Sant'Anna, Benjamin R. Salles, Mateus T. Souza, Sérgio L. Morelhão, Maybi F. Sampaio, Bráulio S. Archanjo, Leonarde N. Rodrigues   +10 more
wiley   +1 more source

Improving the Magnetic Properties Co2FeSi Heusler Compound by Modifying the Crystalline Order in Different Manufacturing Procedures

Journal of Advanced Materials in Engineering, 2019
In this study, the improvement of the magnetic properties of Co2FeSi Heusler compound was followed by the utilization of different experimental synthesizing procedures.
M. Hakimi, M. Safari
doaj  

Mechanochemical synthesis and magnetic properties of maghemite

Vojnotehnički Glasnik, 2011
This work presents the results of an investigation on maghemite (γ -Fe2O3) nanoparticles magnetic properties, which show superparamagnetic behavior i.e. superparamagnetism. Nanoscale maghemite samples were obtained by the mechanochemical method.
Marin M. Tadić, Nada M. Čitaković
doaj   +1 more source