Sarah Jenkins
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View article: Antiferromagnetic skyrmions in spintronics
Antiferromagnetic skyrmions in spintronics Open
The following chapter starts from a base of fundamental physics and from this explains the major advantages that antiferromagnetic skyrmions can provide for applications.
View article: Atomistic calculation of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mi>τ</mml:mi><mml:mn>0</mml:mn></mml:msub></mml:math> inverse attempt frequency in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Fe</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:mrow></mml:math> magnetite nanoparticles
Atomistic calculation of the inverse attempt frequency in magnetite nanoparticles Open
The Arrhenius law predicts transition times between equilibrium states in thermally activated systems, with broad interdisciplinary relevance. In paleomagnetism, it is used to estimate relaxation times and the thermal stability of magnetic…
View article: Thermodynamic properties and switching dynamics of perpendicular shape anisotropy MRAM
Thermodynamic properties and switching dynamics of perpendicular shape anisotropy MRAM Open
The power consumption of modern random access memory (RAM) has been a motivation for the development of low-power non-volatile magnetic RAM (MRAM). Based on a CoFeB/MgO magnetic tunnel junction, MRAM must satisfy high thermal stability and…
View article: Local setting of spin textures in a granular antiferromagnet
Local setting of spin textures in a granular antiferromagnet Open
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View article: Revealing the ultra-fast domain wall motion in Manganese Gold through permalloy capping
Revealing the ultra-fast domain wall motion in Manganese Gold through permalloy capping Open
Antiferromagnets offer much faster dynamics compared to their ferromagnetic counterparts but their order parameter is extremely difficult to detect and control. So far, controlling the Néel order parameter electrically is limited to only v…
View article: The role of faceting and elongation on the magnetic anisotropy of magnetite Fe<sub>3</sub>O<sub>4</sub> nanocrystals
The role of faceting and elongation on the magnetic anisotropy of magnetite Fe<sub>3</sub>O<sub>4</sub> nanocrystals Open
Fe3O4 nanoparticles are one of the most promising candidates for biomedical applications such as magnetic hyperthermia and theranostics due to their bio-compatibility, structural stability and good magnetic properties. However, much is unk…
View article: Local setting of spin textures in a granular antiferromagnet
Local setting of spin textures in a granular antiferromagnet Open
Controlling the magnetic order of antiferromagnets is challenging due to their vanishing net magnetization. For this reason, the study of local spin textures in antiferromagnets is restricted by the difficulty in nucleating such states. He…
View article: Higher-order magnetic anisotropy in soft-hard magnetic materials
Higher-order magnetic anisotropy in soft-hard magnetic materials Open
We have computationally studied the properties of higher-order magnetic anisotropy constants in an L10/A1-FePt core-shell system which is characterized by a strong second-order two-ion Fe-Pt anisotropy component. We show that the core-shel…
View article: Multistep magnetization switching in orthogonally twisted ferromagnetic monolayers
Multistep magnetization switching in orthogonally twisted ferromagnetic monolayers Open
The advent of twist-engineering in two-dimensional (2D) crystals enables the design of van der Waals (vdW) heterostructures exhibiting emergent properties. In the case of magnets, this approach can afford artificial antiferromagnets with t…
View article: Spin-transfer and spin-orbit torques in the Landau–Lifshitz–Gilbert equation
Spin-transfer and spin-orbit torques in the Landau–Lifshitz–Gilbert equation Open
Dynamic simulations of spin-transfer and spin-orbit torques are increasingly important for a wide range of spintronic devices including magnetic random access memory, spin-torque nano-oscillators and electrical switching of antiferromagnet…
View article: Atomistic origin of the athermal training effect in granular IrMn/CoFe bilayers
Atomistic origin of the athermal training effect in granular IrMn/CoFe bilayers Open
Anti-ferromagnetic materials have the possibility to offer ultra fast, high\ndata density spintronic devices. A significant challenge is the reliable\ndetection of the state of the antiferromagnet, which can be achieved using\nexchange bia…
View article: Reservoir Computing with Magnetic Thin Films
Reservoir Computing with Magnetic Thin Films Open
Advances in artificial intelligence are driven by technologies inspired by the brain, but these technologies are orders of magnitude less powerful and energy efficient than biological systems. Inspired by the nonlinear dynamics of neural n…
View article: Reservoir Computing with Thin-film Ferromagnetic Devices
Reservoir Computing with Thin-film Ferromagnetic Devices Open
Advances in artificial intelligence are driven by technologies inspired by the brain, but these technologies are orders of magnitude less powerful and energy efficient than biological systems. Inspired by the nonlinear dynamics of neural n…
View article: Quantum Rescaling, Domain Metastability, and Hybrid Domain‐Walls in 2D CrI<sub>3</sub> Magnets
Quantum Rescaling, Domain Metastability, and Hybrid Domain‐Walls in 2D CrI<sub>3</sub> Magnets Open
Higher‐order exchange interactions and quantum effects are widely known to play an important role in describing the properties of low‐dimensional magnetic compounds. Here, the recently discovered 2D van der Waals (vdW) CrI 3 is identified …
View article: Temperature scaling of two-ion anisotropy in pure and mixed anisotropy systems
Temperature scaling of two-ion anisotropy in pure and mixed anisotropy systems Open
Magnetic anisotropy plays an essential role in information technology applications of magnetic materials, providing a means to retain the long-term stability of a magnetic state in the presence of thermal fluctuations. Anisotropy consists …
View article: Massively parallel atomistic simulation of ultrafast thermal spin dynamics of a permalloy vortex
Massively parallel atomistic simulation of ultrafast thermal spin dynamics of a permalloy vortex Open
Ultrafast magnetization dynamics probes the most fundamental properties of magnetic materials, exploring questions about the fundamental interactions responsible for magnetic phenomena. Thermal effects are known to be extremely important f…
View article: The Effects of Defects and Damage in the Mechanical Behavior of Ti6Al4V Lattices
The Effects of Defects and Damage in the Mechanical Behavior of Ti6Al4V Lattices Open
With recent advances in manufacturing methods for metals with defined, complex shapes, the investigation of metallic lattice materials (metals containing significant porosity with a regular arrangement of the solid, frequently in the form …
View article: Atomistic origin of exchange anisotropy in $\gamma$-IrMn$_3$-CoFe bilayers.
Atomistic origin of exchange anisotropy in $\gamma$-IrMn$_3$-CoFe bilayers. Open
The exchange interaction determines the ferromagnetic (FM) or antiferromagnetic (AFM) ordering of atomic spins. When ferromagnets and antiferromagnets are coupled together, they often exhibit the exchange bias effect, a unidirectional inte…
View article: Uncovering the mystery of delocalised pinned interface spins responsible for exchange bias
Uncovering the mystery of delocalised pinned interface spins responsible for exchange bias Open
The exchange interaction determines the ferromagnetic (FM) or antiferromagnetic (AFM) ordering of atomic spins. When ferromagnets and antiferromagnets are coupled together, they often exhibit the exchange bias effect, a unidirectional inte…