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Evolution of magnetization behaviour of cobalt film on nano patterned silicon substrate, with film thickness, has been studied. In situ magneto-optical Kerr effect measurements during film deposition allowed us to study genuine thickness…

材料科学 · 物理学 2020-03-18 Khushboo Bukharia , Prasanta Karmakar , Dileep Kumar , Ajay Gupta

The correlation between magnetic and structural properties of Co_{2} FeAl (CFA) thin films of different thickness (10 nm<d< 100 nm) grown at room temperature on MgO-buffered Si/SiO2 substrates and annealed at 600\lyxmathsym{\textdegree}C…

材料科学 · 物理学 2014-07-30 M. Belmeguenai , H. Tuzcuoglu , M. S. Gabor , T. Petrisor , C. Tuisan , D. Berling , F. Zighem , S. M. Chérif

The thickness evolution of in-plane magnetization reversal in ultrathin films is studied with a theoretical model that takes account of surface roughness typical of epitaxial growth. Guided by N\'{e}el's model, step edge sites of…

材料科学 · 物理学 2007-05-23 R. A. Hyman , A. Zangwill , M. D. Stiles

We measured geometric and magnetic properties of Co films on the Pd(111) surface by x-ray photoelectron diffraction (XPD), x-ray magnetic circular dichroism (MCD) at the Co L_{2,3} edge, and the surface magneto-optical Kerr effect (SMOKE)…

强关联电子 · 物理学 2007-05-23 S. -J. Oh , Wookje Kim , Wondong Kim , B. -H. Choi , Jae-Young Kim , Hoon Koh , H. -J. Kim , J. -H. Park

Co2FeAl (CFA) thin films with thickness varying from 10 nm to 115 nm have been deposited on MgO(001) substrates by magnetron sputtering and then capped by Ta or Cr layer. X-rays diffraction (XRD) revealed that the cubic $[001]$ CFA axis is…

Co /CoO/Co polycrystalline film was grown on Si (001) substrate and magnetic properties have been investigated using in-situ magneto-optic Kerr effect during growth of the sample. Magnetic anisotropy with easy axis perpendicular to the film…

材料科学 · 物理学 2023-01-31 Dileep Kumar , Ajay Gupta , P. Patidar , K. K. Pandey , T. Sant , S. M. Sharma

We investigate the correlation between roughness, remanence and coercivity in Co/Ni films grown on Cu seed layers of varying thickness. Increasing the Cu seed layer thickness of Ta/Cu/8x[Co/Ni] thin films increases the roughness of the…

材料科学 · 物理学 2017-05-31 N. R. Lee-Hone , R. Thanhoffer , V. Neu , R. Schäfer , M. Arora , R. Hübner , D. Suess , D. M. Broun , E. Girt

We report an interesting magnetic behavior of a Co film (thickness ~ 350 {\AA}) grown on Si/Ti/Cu buffer layer by electro-deposition (ED) technique. Using depth sensitive X-ray reflectivity and polarized neutron reflectivity (PNR) we…

材料科学 · 物理学 2016-04-12 Surendra Singh , C. L. Prajapat , D. Bhattacharya , S. K. Ghosh , M. R. Gonal , S. Basu

Growth optimization of multilayers is a topic of interest due to their unique physical properties. Systems containing magnetic materials, such as platinum-cobalt, have been studied because of their potential for technological applications,…

材料科学 · 物理学 2023-08-21 Carlos H. Verbeno , Jakub Zázvorka , Lukáš Nowak , Martin Veis

The epitaxial system Sm/Co(0001) was studied for Sm coverages up to 1 monolayer (ML) on top of ultrathin Co/W(110) epitaxial films. Two ordered phases were found for 1/3 and 1 ML Sm, respectively. The valence state of Sm was determined by…

材料科学 · 物理学 2009-11-11 J. E. Prieto , O. Krupin , S. Gorovikov , K. Doebrich , G. Kaindl , K. Starke

We present room temperature ferromagnetic resonance (FMR) studies of polycrystalline ||Pt/10 nm Cu/t Co/10 nm Cu/Pt|| films as a function of Co layer thickness (1 < t < 10 nm) grown by evaporation and magnetron sputtering. FMR was studied…

材料科学 · 物理学 2007-07-10 J-M. L. Beaujour , W. Chen , A. D. Kent , J. Z. Sun

Co2MnSi (CMS) films of different thicknesses (20, 50 and 100 nm) were grown by radio frequency (RF) sputtering on a-plane sapphire substrates. Our X-rays diffraction study shows that, in all the samples, the cubic <110> CSM axis is normal…

Anatase Ti0.96Co0.04O2 films were grown epitaxially on SrTiO3 (001) substrates by using plused laser deposition with in-situ reflection high-energy electron diffraction. The oxygen partial pressure, PO2, during the growth was systematically…

材料科学 · 物理学 2009-11-07 D. H. Kim , J. S. Yang , K. W. Lee , S. D. Bu , T. W. Noh , S. -J. Oh , Y. -W. Kim , J. -S. Chung , H. Tanaka , H. Y. Lee , T. Kawai

The magnetoresistance (MR) of 10 nm to 200 nm thin polycrystalline Co-films, deposited on glass and insulating Si(100), is studied in fields up to 120 kOe, aligned along the three principal directions with respect to the current:…

其他凝聚态物理 · 物理学 2009-11-11 Woosik Gil , Detlef Goerlitz , Michael Horisberger , Juergen Koetzler

Thin film deposition on weakly interacting substrates exhibits a unique growth mode characterized by initially strong island formation and rapidly increasing roughness, which reaches a maximum and subsequently decreases as the film returns…

We have studied the magneto-optical spectra of ultrathin magnetic films deposited on Si substrates coated with an oxide layer (SiOx). We find that the Kerr rotation angle and the ellipticity of ~1 nm thick CoFeB thin films, almost…

介观与纳米尺度物理 · 物理学 2018-01-18 Satoshi Sumi , Hiroyuki Awano , Masamitsu Hayashi

Using combined magnetometry and ferromagnetic resonance studies, it is shown that introduction of a hydrocarbon cover layer leads to an increase of the contribution of the surface anisotropy to the effective magnetic anisotropy energy of…

The quantum size effect (QSE) and strain effect are two key factors influencing the surface morphology of thin films, which can increase film surface roughness through QSE-induced thickness oscillation and strain-induced island formation,…

Magnetism of 3d transition metals at high density has always received wide interest due to existence of magnetism at the core of the Earth. For ferromagnetic cobalt, although there is a theoretical prediction that its magnetic moment would…

NiCo2O4 (NCO) films grown on MgAl2O4 (001) substrates have been studied using magnetometry, x-ray magnetic circular dichroism (XMCD) based on x-ray absorption spectroscopy, and spin-polarized inverse photoemission spectroscopy (SPIPES) with…

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