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Using liquid phase epitaxy (LPE) technique (111) yttrium iron garnet (YIG) films with thicknesses of ~100 nm and surface roughnesses as low as 0.3 nm have been grown as a basic material for spin-wave propagation experiments in…

材料科学 · 物理学 2017-05-05 Carsten Dubs , Oleksii Surzhenko , Ralf Linke , Andreas Danilewsky , Uwe Brückner , Jan Dellith

Epitaxial graphene films have been formed on the C-face of semi-insulating 4H-SiC substrates by a high temperature sublimation process. Nano-scale square antidot arrays have been fabricated on these graphene films. At low temperatures,…

介观与纳米尺度物理 · 物理学 2009-11-13 T. Shen , Y. Q. Wu , M. A. Capano , L. R. Rokhinson , L. W. Engel , P. D. Ye

Ferromagnetic resonance (FMR) serves as a powerful probe of magnetization dynamics and anisotropy in percolating ferromagnets, where short-range interactions govern long-range magnetic order. We apply this approach to Ga$_{1-x}$Mn$_x$N ($x…

材料科学 · 物理学 2025-10-16 Y. K. Edathumkandy , K. Das , K. Gas , D. Sztenkiel , D. Hommel , H. Przybylińska , M. Sawicki

We describe a theory of Mn local-moment magnetization relaxation due to p-d kinetic-exchange coupling with the itinerant-spin subsystem in the ferromagnetic semiconductor (Ga,Mn)As alloy. The theoretical Gilbert damping coefficient implied…

介观与纳米尺度物理 · 物理学 2009-11-10 Jairo Sinova , T. Jungwirth , X. Liu , Y. Sasaki , J. K. Furdyna , W. A. Atkinson , A. H. MacDonald

In view of their advantages for memory and storage applications, the quest to find suitable magnetic thin film heterostructures that can exhibit strong spin pumping effect persists in the scientific community. Here, the spin pumping…

We have measured the size effect in nonlocal Gilbert relaxation rate in FM(t$_{FM}$) / Cu (5nm) [/ Pt (2nm)] / Al(2nm) heterostructures, FM = \{ Ni$_{81}$Fe$_{19}$, Co$_{60}$Fe$_{20}$B$_{20}$, pure Co\}. Common behavior is observed for…

介观与纳米尺度物理 · 物理学 2013-08-05 A. Ghosh , J. F. Sierra , S. Auffret , U. Ebels , W. E. Bailey

A finite spin life-time of conduction electrons may dominate Gilbert damping of two-dimensional metallic anti-ferromagnets or anti-ferromagnet/metal heterostructures. We investigate the Gilbert damping tensor for a typical low-energy model…

无序系统与神经网络 · 物理学 2024-04-19 Robert Sokolewicz , Mikhail Baglai , Ivan Ado , Mikhail Katsnelson , Mikhail Titov

The magnetostatic mode (MSM) spectrum of a 300$\mu$m diameter single crystalline sphere of yttrium iron garnet is investigated using broadband ferromagnetic resonance (FMR). The individual MSMs are identified via their characteristic…

We report the experimental observation of collective picosecond magnetization dynamics in [Co/Pd]8 multilayers with perpendicular magnetic anisotropy. The precession frequency shows large and systematic variation from about 5 GHz to about…

介观与纳米尺度物理 · 物理学 2015-05-28 S. Pal , B. Rana , O. Hellwig , T. Thomson , A. Barman

Thin epitaxial films of Tb metal were grown on a clean W(110) substrate in ultra-high vacuum and studied in-situ by low-energy electron microscopy. Annealed films present magnetic contrast in spin-polarized low-energy electron microscopy.…

材料科学 · 物理学 2016-12-01 J. E. Prieto , Gong Chen , A. K. Schmid , J. de la Figuera

Ferromagnetic resonance has been used to study the magnetic properties and magnetization dynamics of polycrystalline Fe$_{1-x}$V$_{x}$ alloy films with $0\leq x < 0.7$. Films were produced by co-sputtering from separate Fe and V targets,…

介观与纳米尺度物理 · 物理学 2009-11-13 J-M. L. Beaujour , A. D. Kent , J. Z. Sun

Half-metals are a class of quantum materials with 100% spin-polarization at the Fermi level and have attracted a lot of attention for future spintronic device applications. CrO2 is one of the most promising half-metal candidates, for which…

We investigate the magnetic and magnetotransport properties of nanostructured Nd0.6Sr0.4MnO3 (NSMO) thin films grown on (100) oriented SrTiO3 (STO) substrates. The thin films fabricated using the pulsed laser deposition technique have been…

The magnetic anisotropy and magnetoelastic properties of the magnetic Weyl semimetal Co2MnGa were investigated by exploiting the Co2MnGa thin films with different chemical orderings. The epitaxial layers were grown by sputtering directly on…

材料科学 · 物理学 2025-02-27 O. Chumak , A. Nabiałek , L. T. Baczewski , T. Seki , J. Wang , K. Takanashi , H. Szymczak

Earlier a magnetic anisotropy for magnetic impurities nearby the surface of non-magnetic host was proposed in order to explain the size dependence of the Kondo effect in dilute magnetic alloys. Recently Giordano has measured the…

强关联电子 · 物理学 2007-05-23 L. Borda , A. Zawadowski

Single-crystal europium iron garnet (EuIG) thin films epitaxially strain-grown on gadolinium gallium garnet (GGG)(100) substrates using off-axis sputtering have strain-induced perpendicular magnetic anisotropy (PMA). By varying the…

Half-Heusler alloys have emerged as promising candidates for novel spintronic applications due to their exceptional properties including the high Curie temperature (TC) above room temperature and large anomalous Hall conductivity (AHC). In…

材料科学 · 物理学 2025-08-28 Hong-Xue Jiang , Jia-wan Li , Shi-Bo Zhao , Jie Wang , Yusheng Hou

Ferromagnetic insulating La$_2$CoMnO$_{6-\epsilon}$ (LCMO) epitaxial thin films grown on top of SrTiO$_3$ (001) substrates presents a strong magnetic anisotropy favoring the out of plane orientation of the magnetization with a strong…

We have experimentally and theoretically investigated the dependence of the intrinsic Gilbert damping parameter $\alpha_0$ on the spin-orbital coupling strength $\xi$ by using L1$_{\mathrm{0}}$ ordered FePd$_{\mathrm{1-x}}$Pt$_{\mathrm{x}}$…

材料科学 · 物理学 2013-02-19 Pan He , X. Ma , J. W. Zhang , H. B. Zhao , G. Lüpke , Z. Shi , S. M. Zhou

Perpendicular magnetic anisotropy (PMA) and dynamic magnetization reversal process in [CoFeB $t$ nm/Pd 1.0 nm]$_n$ ($t$ = 0.4, 0.6, 0.8, 1.0, and 1.2 nm; $n$ = 2 - 20) multilayer films have been studied by means of magnetic hysteresis and…

介观与纳米尺度物理 · 物理学 2014-10-14 Duc-The Ngo , Duy-Truong Quach , Quang-Hung Tran , Kristian Mølhave , The-Long Phan , Dong-Hyun Kim