Gilbert magnetic damping constant of epitaxially grown Co-based Heusler alloy thin films

Oogane, M.; Kubota, T.; Kota, Y.; Mizukami, S.; Naganuma, H.; Sakuma, A.; Ando, Y.
June 2010
Applied Physics Letters;6/21/2010, Vol. 96 Issue 25, p252501
Academic Journal
The magnetic damping constant in a series of Co2MnAlxSi1-x and Co2FexMn1-xSi Heusler alloy epitaxial films were systematically investigated by using ferromagnetic resonance technique. The determined magnetic damping constant is roughly proportional to the density of states at the Fermi energy of the first principle calculation. The result is consistent with the theoretical prediction when taking spin-orbit interaction into account. The small Gilbert damping constant for the fabricated films other than the Co2FexMn1-xSi film with x>0.6 can be originated in the half-metallic electronic structure of Heusler alloys.


Related Articles

  • Influence of a Dy overlayer on the precessional dynamics of a ferromagnetic thin film. Marcham, M. K.; Yu, W.; Keatley, P. S.; Shelford, L. R.; Shafer, P.; Cavill, S. A.; Qing, H.; Neudert, A.; Childress, J. R.; Katine, J. A.; Arenholz, E.; Telling, N. D.; van der Laan, G.; Hicken, R. J. // Applied Physics Letters;2/11/2013, Vol. 102 Issue 6, p062418 

    Precessional dynamics of a Co50Fe50(0.7)/Ni90Fe10(5)/Dy(1)/Ru(3) (thicknesses in nm) thin film have been explored by low temperature time-resolved magneto-optical Kerr effect and phase-resolved x-ray ferromagnetic resonance measurements. As the temperature was decreased from 300 to 140 K, the...

  • Origins of magnetic damping measurement variations using ferromagnetic resonance for nano-sized devices. Eason, Kwaku; Patricia Rouelli Garcia Sabino, Maria; Tran, Michael; Fook Liew, Yun // Applied Physics Letters;6/10/2013, Vol. 102 Issue 23, p232405 

    It is shown that ferromagnetic resonance measured in larger thin films yield varying results for damping in nanosized devices. Results are shown to critically depend on magnetic parameters, scalar and vector. Results here also explain why different experiments have concluded different...

  • X-ray diffraction and ferromagnetic resonance study of sputtered (110) GaAs/Fe epitaxial films. Ding, Yunfei; Alexander, Chester; Klemmer, Timothy J. // Journal of Applied Physics;5/15/2003, Vol. 93 Issue 10, p6674 

    A series of epitaxial (110) Fe films with thicknesses from 5 to 164 nm were deposited on (110) GaAs substrates by rf magnetron sputtering. X-ray diffraction pole figures, in-plane Ï•-scan measurements, and ferromagnetic resonance linewidths show decreasing crystal quality with increasing...

  • Large internal stress-assisted twin-boundary motion in Ni2MnGa ferromagnetic shape memory alloy. Nie, Z. H.; Cong, D. Y.; Liu, D. M.; Ren, Y.; Pötschke, M.; Roth, S.; Wang, Y. D. // Applied Physics Letters;10/3/2011, Vol. 99 Issue 14, p141907 

    The twin boundary motion driven by thermo-magnetic coupling was in-situ studied in a NiMnGa single crystal using high-energy x-ray diffraction technique. An unstable martensite with an internal stress of ∼8 MPa was obtained through a thermo-magnetic training. The triple martensite variants...

  • Effect of sodium hypophosphite content to the deposition rate, structure and magnetic properties of electroless deposited Ni-P alloy. Yaroslavtsev, R. N.; Chekanova, L. A.; Komogortsev, S. V.; Iskhakov, R. S. // Solid State Phenomena;2014, Vol. 215, p237 

    The deposition kinetics, structure and magnetic properties of electroless deposited films Ni-P were investigated depending on the amount of sodium hypophosphite in the electroless bath. It was found that the film deposition rate is linear and unambiguously varies with the hypophosphite content...

  • Engineering Gilbert damping by dilute Gd doping in soft magnetic Fe thin films. Zhang, W.; Jiang, S.; Wong, P. K. J.; Sun, L.; Wang, Y. K.; Wang, K.; de Jong, M. P.; van der Wiel, W. G.; van der Laan, G.; Zhai, Y. // Journal of Applied Physics;2014, Vol. 115 Issue 17, p17A308-1 

    By analyzing the ferromagnetic resonance linewidth, we show that the Gilbert damping constant in soft magnetic Fe thin films can be enhanced by ∼6 times with Gd doping of up to 20%. At the same time, the magnetic easy axis remains in the film plane while the coercivity is strongly reduced...

  • Structural and mechanical properties of nanostructured metalloceramic coatings on cobalt chrome alloys. Catledge, Shane A.; Vohra, Yogesh K.; Woodard, S.; Venugopalan, R. // Applied Physics Letters;3/10/2003, Vol. 82 Issue 10, p1625 

    A functionally graded nanocrystalline metalloceramic coating on cobalt-chrome alloys was investigated with thin-film x-ray diffraction (XRD), nanoindentation, and scratch adhesion testing. The gradual transition in bonding from metallic to predominantly covalent along with a nanocrystalline...

  • Combinatorial investigation of the mechanical properties of aluminum-silicon thin film nanocomposites. Olk, C. H.; Lukitsch, M.; Haddad, D. B. // Journal of Materials Research;Apr2007, Vol. 22 Issue 4, p12 

    We have undertaken the exploration of AlxSi1-χ material systems to discover new alloys with enhanced mechanical properties. Combinatorial methods were used to systematically control thin film microstructure through variations in composition and growth temperature. Discrete libraries of...

  • Electrical conduction in ternary semiconductor Ga5Se20Te75 thin films. Das, V. Damodara; Raju, K. S.; Bhaskaran, A. // Journal of Applied Physics;9/1/1995, Vol. 78 Issue 5, p3262 

    Focuses on the electrical conductivity studies made on flash-evaporated tellurium-rich ternary alloy gallium-selenium-tellurium thin films as a function of thickness and during and after vacuum annealing. Difference in resistance variation during heating and cooling and between the thinner and...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics