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相关论文: Spin-Wave Resonance Model of Surface Pinning in Fe…

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Spin-wave resonance (SWR) is a newly emerged method for studying surface magnetic anisotropy and surface spin-wave modes (SSWMs) in (Ga,Mn)As thin films. The existence of SSWMs in (Ga,Mn)As thin films has recently been reported in the…

材料科学 · 物理学 2023-07-19 H. Puszkarski , P. Tomczak

We studied magnetic field dependent microwave absorption in epitaxial La$_{0.7}$Sr$_{0.3}$MnO$_{3}$ films using an X-band Bruker ESR spectrometer. By analyzing angular and temperature dependence of the ferromagnetic and spin-wave resonances…

强关联电子 · 物理学 2009-11-13 M. Golosovsky , P. Monod , P. K. Muduli , R. C. Budhani

We report ferromagnetic and spin wave resonance absorption measurements on high quality epitaxially grown Ga_{1-x}Mn_{x}As thin films. We find that these films exhibit robust ferromagnetic long-range order, based on the fact that up to…

凝聚态物理 · 物理学 2009-11-10 T. G. Rappoport , P. Redlinski , X. Liu , G. Zarand , J. K. Furdyna , B. Janko

We study the symmetry of the coupling between surface acoustic waves and ferromagnetic resonance in a thin magnetic film of CoFeB deposited on top of a piezoelectric Z-cut LiNbO3 substrate. We vary the orientation of the applied magnetic…

Broadband ferromagnetic resonance is measured in single crystalline Fe films of varying thickness sandwiched between MgO layers. An exhaustive magnetic characterization of the films (exchange constant, cubic, uniaxial and surface…

材料科学 · 物理学 2023-01-10 José Solano , Olga Gladii , Pierre Kuntz , Yves Henry , David Halley , Matthieu Bailleul

Coherent gigahertz-frequency surface acoustic waves (SAWs) traveling on the surface of a piezoelectric crystal can, via the magnetoelastic interaction, resonantly excite traveling spin waves in an adjacent thin-film ferromagnet. These…

材料科学 · 物理学 2016-03-10 Praveen G. Gowtham , Takahiro Moriyama , Daniel C. Ralph , Robert A. Buhrman

The ferromagnetic resonance frequencies are obtained for a thin ferromagnetic film with surface anisotropy for the cases when the external magnetic field is applied perpendicularly or parallel to the film surface, and for various…

介观与纳米尺度物理 · 物理学 2018-12-05 N. A. Usov

Spin waves are promising candidates to carry, transport, and process information. Controlling the propagation characteristics of spin waves in magnetic materials is an essential ingredient for designing spin-wave based computing…

应用物理 · 物理学 2020-07-29 Morteza Mohseni , Burkard Hillebrands , Philipp Pirro , Mikhail Kostylev

(Dated: August 3, 2018) The new method of numerical analysis of experimental ferromagnetic resonance (FMR) spectra in thin films is developed and applied to (Ga,Mn)As thin films. Specifically, it starts with the finding of numerical…

材料科学 · 物理学 2018-10-17 Piotr Tomczak , Henryk Puszkarski

We report results of micro-Brillouin-Mandelstam light scattering spectroscopy of thermal magnons in the two-phase synthetic multiferroic structure consisting of a piezoelectric (PMN-PT) substrate and a Ni thin film with the thickness of 64…

Magnetic anisotropy, spin wave (SW) excitation and exchange stiffness constant of amorphous FeTaC ($d$ = 20-200 nm) films were studied as a function of thickness using micro-strip ferromagnetic resonance (MS-FMR) technique. The MS-FMR…

介观与纳米尺度物理 · 物理学 2015-11-09 B. Samantaray , Akhilesh Kr. Singh , A. Perumal , P. Mandal

We investigated the microwave-induced DC response of spin wave resonance (SWR) in a permalloy thin strip via electrical detection. Our experimental results obtained by sweeping the external field reveal that: 1. the amplitude of SWR signals…

材料科学 · 物理学 2013-08-15 Ziqian Wang , Wei Lu , Bogen Wang

The collective behavior of spins in a dilute magnetic semiconductor is determined by their mutual interactions and influenced by the underlying crystal structure. Hence, we begin with the atomic quantum-mechanical description of this system…

材料科学 · 物理学 2010-10-12 Agnieszka Werpachowska , Tomasz Dietl

Voltage induced magnetization dynamics of magnetic thin films is a valuable tool to study anisotropic fields, exchange couplings, magnetization damping and spin pumping mechanism. A particularly well established technique is the…

介观与纳米尺度物理 · 物理学 2020-06-24 Jorge Puebla , Mingran Xu , Bivas Rana , Kei Yamamoto , Sadamichi Maekawa , Yoshichika Otani

We present theoretical studies of the spin pumping contribution to the ferromagnetic resonance linewidth for various ultrathin film ferromagnetic structures. We consider the isolated film on a substrate, with Fe on Au(100) and Fe on W(110)…

其他凝聚态物理 · 物理学 2007-05-23 A. T. Costa , R. B. Muniz , D. L. Mills

Control of the spin wave dynamics in nanomagnetic elements is very important for the realization of a broad range of novel magnonic devices. Here we study experimentally the spin wave resonance in thick ferromagnetic rings (100 nm) using…

应用物理 · 物理学 2021-12-28 Xue Zhou , Elena Tartakovskaya , Gleb Kakazei , Adekunle Adeyeye

Spin-torque driven ferromagnetic resonance (ST-FMR) is used to study thin Co/Ni synthetic layers with perpendicular anisotropy confined in spin-valve based nanojunctions. Field swept ST-FMR measurements were conducted with a magnetic field…

介观与纳米尺度物理 · 物理学 2008-01-07 W. Chen , J-M. L. Beaujour , G. de Loubens , A. D. Kent , J. Z. Sun

We report on the resonant excitation of spin waves in micro-structured magnetic thin films by surface acoustic waves (SAWs). The spin waves as well as the acoustic waves are studied by micro-focused Brillouin light scattering spectroscopy.…

We present a comprehensive theoretical and experimental study of voltage-controlled standing spin waves resonance (SSWR) in PMN-PT/NiFe multiferroic heterostructures patterned into microstrips. A spin-diode technique was used to observe…

Angle-resolved photoemission (PE) was used to characterize the spin-density wave (SDW) state in thin films of Cr grown on W(110). The PE data were analysed using results of local spin density approximation layer-Korringa-Kohn-Rostoker…

材料科学 · 物理学 2009-11-10 F. Schiller , D. V. Vyalikh , V. D. P. Servedio , S. L. Molodtsov
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