106 citations · 563 across the 21 of their papers we have counts for
14 papers · 1 filter
Atomistic calculation of the f0 attempt frequency in Fe3O4 magnetite nanoparticles
Roberto Moreno, Sarah Jenkins, Wyn Williams +1
The Arrhenius law predicts the transition time between equilibrium states in physical systems due to thermal activation, with broad applications in material science, magnetic hyper…
Single-shot laser-induced switching of an exchange biased antiferromagnet
Zongxia Guo, Junlin Wang, Gregory Malinowski +13
Ultrafast manipulation of magnetic order has challenged our understanding the fundamental and dynamic properties of magnetic materials. So far single shot magnetic switching has be…
Higher-order magnetic anisotropy in soft-hard magnetic materials
Binh Nguyen, Sarah Jenkins, Sergiu Ruta +2
We have computationally studied the properties of higher-order magnetic anisotropy constants in an L10/A1-FePt coreshell system which is characterized by a strong second-order 2-io…
Breaking through the Mermin-Wagner limit in 2D van der Waals magnets
Sarah Jenkins, Levente Rozsa, Unai Atxitia +3
The Mermin-Wagner theorem states that long-range magnetic order does not exist in one- or two-dimensional (2D) isotropic magnets with short-ranged interactions. The theorem has bee…
Generalised form of the magnetic anisotropy field in micromagnetic and atomistic spin models
Jack B. Collings, Ricardo Rama-Eiroa, Rubén M. Otxoa +2
We present a general approach to the derivation of the effective anisotropy field which determines the dynamical behaviour of magnetic spins according to the Landau-Lifshitz-Gilber…
The atomistic origin of the athermal training effect in granular IrMn/CoFe bilayers
Sarah Jenkins, Roy. W. Chantrell, Richard. F. L. Evans
Anti-ferromagnetic materials have the possibility to offer ultra fast, high data density spintronic devices. A significant challenge is the reliable detection of the state of the a…
The origin of exchange bias in multigranular non-collinear IrMn/CoFe thin films
Sarah Jenkins, Roy W. Chantrell, Richard F. L. Evans
Antiferromagnetic spintronic devices have the potential to outperform conventional ferromagnetic devices due to their ultrafast dynamics and high data density. A challenge in desig…
Spin wave excitations in exchange biased IrMn/CoFe bilayers
Sarah Jenkins, Roy W. Chantrell, Richard F. L. Evans
Using an atomistic spin model, we have simulated spin wave injection and propagation into antiferromagnetic IrMn from an exchange coupled CoFe layer. The spectral characteristics o…
Temperature scaling of two-ion anisotropy in pure and mixed anisotropy systems
Richard F. L. Evans, Levente Rózsa, Sarah Jenkins +1
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…
Role of anti-phase boundaries in the formation of magnetic domains in magnetite thin films
Roberto Moreno, Sarah Jenkins, Vlado K. Lazarov +1
Anti-phase boundaries (APBs) are structural defects which have been shown to be responsible for the anomalous magnetic behaviour observed in different nanostructures. Understanding…
Massively parallel atomistic simulation of ultrafast thermal spin dynamics of a permalloy vortex
Daniel Meilak, Sarah Jenkins, Rory Pond +1
Ultrafast magnetization dynamics probes the most fundamental properties of magnetic materials, exploring questions about the fundamental interactions responsible for magnetic pheno…
Magnetic stray fields in nanoscale magnetic tunnel junctions
Sarah Jenkins, Andrea Meo, Luke Elliott +5
The magnetic stray field is an unavoidable consequence of ferromagnetic devices and sensors leading to a natural asymmetry in magnetic properties. Such asymmetry is particularly un…
Extraordinary temperature dependent magnetic anisotropy of the non-collinear antiferromagnet IrMn
Sarah Jenkins, Roy Chantrell, Timothy Klemmer +1
The magnetic anisotropy of antiferromagnets plays a crucial role in stabilising the magnetisation of many spintronic devices. In non-collinear antiferromagnets such as IrMn the sym…
Atomistic origin of exchange anisotropy in -IrMn-CoFe bilayers
Sarah Jenkins, Wei Jia Fan, Roxana Gaina +3
The exchange interaction determines the ferromagnetic (FM) or antiferromagnetic (AFM) ordering of atomic spins. When ferromagnets and antiferromagnets are coupled together, they of…