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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Kasama, Takeshi
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2019Electron holographycitations
- 2018Optimal microstructural design for high thermal stability of pure FCC metals based on studying effect of twin boundaries character and network of grain boundariescitations
- 2018Optimal microstructural design for high thermal stability of pure FCC metals based on studying effect of twin boundaries character and network of grain boundariescitations
- 2018Probing the chemistry of adhesion between a 316L substrate and spin-on-glass coatingcitations
- 2018Mechanisms of Se(IV) Co-precipitation with Ferrihydrite at Acidic and Alkaline Conditions and Its Behavior during Agingcitations
- 2018Magnetically activated microcapsules as controlled release carriers for a liquid PDMS cross-linkercitations
- 2018Transformation of iron containing constituent intermetallic particles during hydrothermal treatment
- 2017Mechanical properties of multilayer Ni-Fe and Ni-Fe-Al2O3 nanocomposite coatingcitations
- 2017Mechanical properties of multilayer Ni-Fe and Ni-Fe-Al 2 O 3 nanocomposite coatingcitations
- 2016Origin of Spontaneous Core-Shell AIGaAs Nanowires Grown by Molecular Beam Epitaxycitations
- 2015Influence of aging products on tensile deformation behavior of Al-0.62 mass%Mg-0.32 mass%Si alloycitations
- 2014Interferometric methods for mapping static electric and magnetic fieldscitations
- 2014Transmission electron microscopy of unstained hybrid Au nanoparticles capped with PPAA (plasma-poly-allylamine):Structure and electron irradiation effectscitations
- 2014Transmission electron microscopy of unstained hybrid Au nanoparticles capped with PPAA (plasma-poly-allylamine)citations
- 2014Off-axis electron holography of ferromagnetic multilayer nanowirescitations
- 20143D visualization of TiO2 nanocrystals in mesoporous nanocomposite using energy filtered transmission electron microscopy tomographycitations
- 2014Towards quantitative off-axis electron holographic mapping of the electric field around the tip of a sharp biased metallic needlecitations
- 2014Magnetic characterization of synthetic titanomagnetites: quantifying the recording fidelity of ideal synthetic analogscitations
- 2013Ferrimagnetic/ferroelastic domain interactions in magnetite below the Verwey transition. Part I: electron holography and Lorentz microscopycitations
- 2013Oxidation of Dodecanoate Intercalated Iron(II)–Iron(III) Layered Double Hydroxide to Form 2D Iron(III) (Hydr)oxide Layerscitations
- 2013Ferrimagnetic/ferroelastic domain interactions in magnetite below the Verwey transition: Part II. Micromagnetic and image simulationscitations
- 2011Formation process and superparamagnetic properties of (Mn,Ga)As nanocrystals in GaAs fabricated by annealing of (Ga,Mn)As layers with low Mn content
- 2011Formation process and superparamagnetic properties of (Mn,Ga)As nanocrystals in GaAs fabricated by annealing of (Ga,Mn)As layers with low Mn contentcitations
- 2011Spin reorientation in α-Fe2O3 nanoparticles induced by interparticle exchange interactions in alpha-Fe2O3/NiO nanocompositescitations
- 2011Voids and Mn-rich inclusions in a (Ga,Mn)As ferromagnetic semiconductor investigated by transmission electron microscopycitations
- 2010Direct observation of ferrimagnetic/ferroelastic domain interactions in magnetite below the Verwey transitioncitations
- 2010Interpretation of electron beam induced charging of oxide layers in a transistor studied using electron holographycitations
- 2010Nonadiabatic Spin Torque Investigated Using Thermally Activated Magnetic Domain Wall Dynamicscitations
- 2006Periodic inclusion of room-temperature-ferromagnetic metal phosphide nanoparticles in carbon nanotubescitations
Places of action
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article
Off-axis electron holography of ferromagnetic multilayer nanowires
Abstract
We have used electron holography to investigate the local magnetic behavior of isolated ferromagnetic nanowires (NWs) in their remanent states. The NWs consisted of periodic magnetic layers of soft, high-saturation magnetization CoFeB alloys, and non-magnetic layers of Cu. All NWs were fabricated by pulsed-potential electrodeposition in nanoporous alumina membranes. The NW composition and layer thicknesses were measured using scanning transmission electron microscopy and energy dispersive spectroscopy. The magnetization of individual NWs depended upon the thicknesses of the layers and the direction of an external magnetic field, which had been applied in situ. When the CoFeB was thicker than the diameter (50 nm), magnetization was axial for all external field directions, while thinner layers could be randomized via a perpendicular field. In some cases, magnetization inside the wire was detected at an angle with respect to the axis of the wires. In thinner Cu/CoFeB ((<10 nm each) multilayer, magnetic field vortices were detected, associated with opposing magnetization in neighbouring layers. The measured crystallinity, compositions, and layer thicknesses of individual NWs were found to be significantly different from those predicted from calibration growths based on uniform composition NWs. In particular, a significant fraction of Cu (up to 50 at. %) was present in the CoFeB layers such that the measured magnetic induction was lower than expected. These results will be used to better understand previously measured effective anisotropy fields of similar NW arrays. © 2014 AIP Publishing LLC.