Investigation of the temperature-dependence of ferromagnetic resonance and spin waves in Co2FeAl0.5Si0.5

  title={Investigation of the temperature-dependence of ferromagnetic resonance and spin waves in Co2FeAl0.5Si0.5},
  author={Li Ming Loong and Jae Hyun Kwon and Praveen Deorani and Chris Nga Tung Yu and Atsufumi Hirohata and Hyunsoo Yang},
  journal={Applied Physics Letters},
Co2FeAl0.5Si0.5 (CFAS) is a Heusler compound that is of interest for spintronics applications, due to its high spin polarization and relatively low Gilbert damping constant. In this study, the behavior of ferromagnetic resonance as a function of temperature was investigated in CFAS, yielding a decreasing trend of damping constant as the temperature was increased from 13 to 300 K. Furthermore, we studied spin waves in CFAS using both frequency domain and time domain techniques, obtaining group… 
Correlation between structural, magnetic and transport properties of Co2FeSi thin films
Co2FeSi thin films are grown on a Si (1 0 0) substrate using ultrahigh-vacuum magnetron sputtering at different substrate temperatures from 300 °C to 550 °C. The films are characterized using grazing
Investigating and engineering spin-orbit torques in heavy metal/Co2FeAl0.5Si0.5/MgO thin film structures
Current-induced spin-orbit torques (SOTs) have the potential to revolutionize magnetization switching technology. Here, we investigate SOT in a heavy metal (HM)/Co2FeAl0.5Si0.5 (CFAS)/MgO thin film
The Gilbert damping of thickness-dependent epitaxial single-crystal Heusler Co2FeAl films at various temperatures
Gilbert damping in epitaxial Heusler Co2FeAl films with thickness varying from 3 nm to 9 nm are investigated by broadband ferromagnetic resonance (FMR) with a temperature range of 5 K–300 K. Gilbert
Doping effects on structural and magnetic properties of Heusler alloys Fe2Cr1-xCoxSi
In this work, 30nm Fe2Cr1-xCoxSi (FCCS) magnetic films were deposited on Cr buffered MgO (100) substrates by sputtering. Fe2Cr0.5Co0.5Si exhibits the largest magnetization and optimal ordered L21
Field and fluence dependences of laser-induced multiple spin-wave dynamics in Co2FeAl0.5Si0.5 films
Field- and fluence-dependent spin-wave dynamics in full-Heusler Co2FeAl0.5Si0.5 films are studied by using time-resolved magneto-optical polar Kerr spectroscopy. Volume magnetostatic spin-wave (VMSW)
Dynamic and Magnetotransport Properties of Perpendicularly Magnetized CoFeB Magnetic Tunnel Junctions
We present the study of the dynamic properties of CoFeB (CFB) based magnetic tunnel junctions (MTJ) by Brillouin light scattering spectroscopy and micro-strip ferromagnetic resonance technique as
Simultaneous laser excitation of backward volume and perpendicular standing spin waves in full-Heusler Co2FeAl0.5Si0.5 films
Backward volume magnetostatic spin-wave (BVMSW) mode is observed in films with thickness ranging from 20 to 100 nm besides perpendicular standing spin- wave (PSSW) mode, and found to be excited more efficiently than the PSSW mode.
Anomalous Hall Effect of Fe2CoSi/Pt Multilayers With Large Perpendicular Magnetic Anisotropy
In this paper, the anomalous Hall effect (AHE) of [Fe<sub>2</sub>CoSi/Pt]<sub><italic>n</italic></sub> multilayers with large perpendicular magnetic anisotropy has been investigated. We found that
Spin wave propagation detected over 100μm in half-metallic Heusler alloy Co2MnSi
Abstract The field of magnon spintronics offers a charge current free way of information transportation by using spin waves (SWs). Compared to forward volume spin waves for example, Damon-Eshbach
Temperature-and thickness -dependent dynamic magnetic properties of sputtered CoFeB/Ta bilayer films
  • Guangduo Lu, Xiufeng Huang, +5 authors Liqing Pan
  • Materials Science
    Journal of Alloys and Compounds
  • 2018
Abstract A series of CoFeB/Ta bilayer nano-thin films was fabricated on Si substrate using magnetron sputtering at room temperature. The temperature-and thickness-dependent dynamic magnetic


Ferromagnetic resonance of ultrathin metallic layers
The contribution that the technique of ferromagnetic resonance (FMR) has made to the understanding of the magnetic behaviour of ultrathin single films is reviewed. Experimental methods to measure FMR
High propagating velocity of spin waves and temperature dependent damping in a CoFeB thin film
Spin wave propagation in a magnetron-sputtered CoFeB thin film is investigated. We apply both in-plane and out-of-plane magnetic fields. At room temperature, we find velocities of up to 25 and 3.5
Low-damping spin-wave propagation in a micro-structured Co2Mn0.6Fe0.4Si Heusler waveguide
We report on the investigation of spin-wave propagation in a micro-structured Co2Mn0.6Fe0.4Si (CMFS) Heusler waveguide. The reduced magnetic losses of this compound compared to the commonly used
Low damping constant for Co2FeAl Heusler alloy films and its correlation with density of states
Gilbert damping for the epitaxial Co2FeAl Heusler alloy films was investigated. Gilbert damping constant for the films was evaluated by analyzing the data of ferromagnetic resonance measured at the
Structural and magnetic properties of Co2FeAl1−xSix
This work reports about the structural and magnetic properties of the quaternary Heusler alloy Co2FeAl1−xSix with varying Si concentration. The structure of the Co2FeAl1−xSix solid solution was
Evolution of ferromagnetic and spin-wave resonances with crystalline order in thin films of full-Heusler alloy Co2MnSi
We report the evolution of magnetic moment as well as magnetic anisotropy with crystalline order in Co2MnSi thin films grown on (100) MgO by pulsed laser deposition. The films become more ordered as
Demonstration of half-metallicity in fermi-level-tuned Heusler alloy Co2FeAl0.5Si0.5 at room temperature.
Fermi level tuning has been successfully demonstrated in Co-based full-Heusler alloy CFAS, which exhibits the highest effective spin polarization at 300 K and the weakest temperature dependence of P_{eff} among all known half metals.
Wave number and temperature dependent Landau‐Lifshitz damping in nickel
Using the technique of microwave transmission at FMAR, we have measured the temperature dependence of the Landau‐Lifshitz damping parameter λ in nickel. It was found that the magnitude of λ increased
Ferromagnetism of UFe2 and Comparison with the Ferromagnetic Theories
The intermetallic compound UFe2 is ferromagnetic. A considerable number of magnetization isotherms have been obtained from 200°K down to 4.2°K with applied field up to 14 000 Oe. The Curie
Time-domain measurement of current-induced spin wave dynamics.
It is shown that P, α, and β can be simultaneously determined by performing a single series of time-domain measurements of current-induced spin wave dynamics in a ferromagnetic film.